Wan-Bissaka and the New Geometry of Villa’s Back Four

By Nico Valenti

Aaron Wan-Bissaka’s arrival at Aston Villa, two days after Matteo Ruggeri completed his move from Atlético Madrid, gives Unai Emery something he has not always possessed at full-back: genuinely different ways of constructing the same team.

Wan-Bissaka has joined from West Ham on an initial season-long loan which becomes permanent if agreed conditions are met. Ruggeri, 24, arrived earlier in the week after one season with Atlético. Place them alongside Matty Cash and Ian Maatsen and Villa suddenly have four senior full-backs whose differences are probably more interesting than the question of who sits first and second in each position.

Cash and Wan-Bissaka are both experienced Premier League right-backs of a similar age, but they do not naturally solve the same problem. Cash’s game still contains plenty of the winger he once was. Give him space ahead and his instinct is to use it, running beyond the player in front of him, arriving high enough to attack the penalty area and forcing the opposition’s left side to retreat with him. Wan-Bissaka has spent much of his career becoming exceptional in a different kind of space: the one that appears when possession has already been lost and a winger believes he is about to attack the full-back alone.

That distinction makes the signing more interesting than ordinary competition for places.

Villa do not have to decide whether they want an attacking right-back or a defensive one for the season. Emery can make that decision from match to match, sometimes during the match itself, while changing the behaviour of the other side of the pitch at the same time.

Wan-Bissaka’s reputation inevitably begins with his defending. The sliding tackle has become almost a trademark, partly because his reach allows him to make interventions from positions where most defenders would already have lost the duel. The better quality sits slightly earlier in the sequence. He is remarkably comfortable allowing an attacker to continue towards him. Where some full-backs feel compelled to win the ball immediately, Wan-Bissaka can delay, adjust his feet and wait until the winger has committed to the touch that makes the tackle possible.

Cash generally approaches the same situation with more aggression. He likes to meet opponents earlier, disrupt the reception and prevent them establishing momentum in the first place. Neither approach is intrinsically superior. The opposition, the space behind the full-back and the players providing cover all affect which one Villa might prefer.

The difference becomes especially interesting once Ruggeri and Maatsen are added to the picture.

Four full-backs, rather than two pairs

It would be tempting to imagine Wan-Bissaka and Ruggeri as Villa’s more cautious combination, with Cash and Maatsen used when Emery wants to attack. The reality should be considerably more fluid.

Wan-Bissaka and Ruggeri can play together without making Villa conservative. Ruggeri spent much of his development at Atalanta as a wing-back and is comfortable advancing well beyond the defensive line, particularly after the ball has already moved towards the left. He can overlap, but some of his better movements arrive inside the winger, making diagonal runs into the half-space rather than simply racing towards the corner flag. If Ruggeri advances, Wan-Bissaka can remain closer to the centre-backs on the opposite side and give Villa a natural three-man platform behind the attack.

The resulting shape could begin as a conventional back four and gradually resemble a three once Villa have established possession. Ruggeri goes, Wan-Bissaka stays. A midfielder remains ahead of the defenders and Villa can commit players towards the left without asking both full-backs to vacate the defensive line simultaneously.

That could suit Alejandro Garnacho particularly well. Ruggeri’s movement can support him outside or inside depending on where Garnacho receives, while Wan-Bissaka’s positioning on the opposite flank means Villa do not necessarily have to compensate by pulling another midfielder backwards. The balance is produced across the width of the pitch rather than by asking every player to occupy a symmetrical position.

Maatsen alongside Wan-Bissaka creates another version of the same principle, arguably an even more aggressive one. Maatsen is comfortable carrying possession himself, moving into central midfield and appearing high in the final third. Leaving Wan-Bissaka slightly deeper could give Maatsen greater licence to roam without every turnover immediately exposing Villa on both sides. In that combination, Wan-Bissaka’s contribution to the attack may partly be the freedom he gives somebody forty yards away.

Cash and Ruggeri can reverse the arrangement.

Cash goes high on the right, providing the overlap and making the run beyond the winger, while Ruggeri is perfectly comfortable remaining closer to the centre-backs when the moment requires it. His education in a back three at Atalanta makes that position relatively natural.

Villa could therefore create broadly the same defensive platform with a completely different attacking emphasis: instead of loading the left and protecting it from the right, the right-back becomes the aggressive runner and Ruggeri provides the restraint.

That may be particularly useful when Villa face a side whose left winger does not threaten aggressively in transition, allowing Cash to spend more of the match closer to the opposition penalty area. If the opponent’s main threat arrives from that side instead, Wan-Bissaka immediately becomes more attractive.

The fourth combination — Cash with Maatsen — probably contains the greatest attacking potential and the greatest need for protection underneath it. Both naturally want to advance and both can arrive considerably higher than their starting position. Against a deep block at Villa Park, especially when the opponent offers little threat beyond the first clearance, that may be exactly what Emery wants. Villa can stretch both sides simultaneously and force the opposition wingers so deep that they effectively become additional full-backs.

The midfield then becomes important. João Gomes or Boubacar Kamara may need to remain closer to the centre-backs, while the positioning of the two attacking midfielders has to make sure Villa are not left with an enormous empty space when possession breaks down. The risk is not necessarily a reason to avoid Cash and Maatsen together; it simply changes what everyone else has to do.

That feels much closer to Emery’s football than establishing two predetermined partnerships.

A team sheet may list a right-back and a left-back. Their responsibilities only become clear once Villa have the ball.

What Wan-Bissaka adds to the equation

Wan-Bissaka’s arrival makes those choices possible because he gives Villa an unusually strong defensive anchor on the flank without being quite as limited in possession as the old caricature suggests.

His time at West Ham showed more willingness to carry the ball than his reputation at Manchester United sometimes implied. Wan-Bissaka can look less elegant than the league’s best attacking full-backs, but he is difficult to dispossess once he begins moving. He uses small changes of direction, protects the ball well and is comfortable taking on the first opponent rather than automatically returning possession inside.

Cash’s forward movement is usually more vertical. The space appears, he attacks it. Wan-Bissaka is more likely to progress by dealing with somebody already standing in his path.

The distinction could matter against an organised block. A right-back receiving underneath the winger normally sees a relatively predictable set of options: release the winger, recycle towards midfield or overlap. If Wan-Bissaka can beat the first opponent himself, the defensive structure has to change. A midfielder moves across to confront him and another passing lane opens inside.

Villa do not need him to produce the final action every time. In fact, Cash remains comfortably the more natural player around the opposition penalty area. His timing when arriving at the back post, willingness to shoot and repeated overlapping runs give Villa a direct attacking threat which Wan-Bissaka has never consistently produced.

Emery now has a choice between different forms of progression rather than a good version and a lesser version of the same right-back.

The defensive implications extend beyond Wan-Bissaka’s own flank. One of Villa’s recurring problems when committing numbers forward is deciding how much insurance to leave behind the attack. If both full-backs advance, one of the midfielders normally has to compensate. If one stays, that midfielder can sometimes occupy a more useful position ahead of the ball.

Wan-Bissaka is particularly well suited to being the player who stays because being left exposed does not make him uncomfortable. If Villa lose possession and the opposition immediately find their left winger, Emery can reasonably trust Wan-Bissaka to manage the first duel for longer than he could with most defenders. He does not even have to win it.

Delay the winger, force him towards the touchline or make him take one extra touch and Gomes has time to recover. The centre-back can move across without being dragged into an emergency. What initially looked like a dangerous counter becomes a conventional defensive phase.

In that sense, Wan-Bissaka may sometimes contribute to Villa’s attacking freedom precisely because he is not joining the attack.

One of the midfielders can remain higher.

The winger ahead of Wan-Bissaka may not have to retreat quite as quickly because the first duel behind him is being handled by one of the best isolation defenders in the league.

That is a more useful way of thinking about the signing than simply labelling him defensive.

Competition without a fixed hierarchy

Cash should still play plenty of football. He has years of accumulated understanding with Villa’s centre-backs and midfielders, knows Emery’s positional demands and offers forward running from right-back that nobody else in the squad quite replicates. Wan-Bissaka does not arrive to make all of that redundant.

What changes is the assumption that the position has one obvious interpretation.

If Villa face a dangerous left winger who wants to receive isolated and dribble, Wan-Bissaka becomes an extremely attractive choice. If the opponent sits with ten players behind the ball and Villa need another runner consistently appearing beyond their right winger, Cash may offer more. A team vulnerable down the opposite flank may encourage Emery to attack aggressively with Ruggeri or Maatsen and use Wan-Bissaka as insurance. Another may invite the reverse, with Cash moving forward while Ruggeri stays.

The substitutions become more interesting too. Wan-Bissaka starting and Cash entering after an hour is not simply a fresh pair of legs. The right side can become significantly more aggressive without Villa changing formation. Cash starting before Wan-Bissaka replaces him while Villa protect a lead changes the nature of the final twenty minutes in the opposite direction.

The same applies across the pitch. Ruggeri can replace Maatsen and subtly change the way Villa build. Suddenly the left-back may spend less time carrying the ball himself and more time moving after it, while the right-back is given different freedom in response.

Wan-Bissaka and Ruggeri may start plenty of matches together. So might Wan-Bissaka and Maatsen, Cash and Ruggeri, and Cash and Maatsen. The attraction lies in not having to identify the definitive pairing at all.

Villa have spent much of this summer rebuilding a squad that lost several important players, but some of the recruitment suggests the aim is not simply to reconstruct the old team. Different profiles are being added in positions that previously had relatively established behaviours.

Wan-Bissaka fits that idea neatly.