Manchester United’s defensive collapse is no longer a matter of individual misfires—it is a structural breakdown, and Arsenal’s Martin Keown has delivered a damning verdict on who bears responsibility. The £57m Lisandro Martinez, once hailed as a defensive anchor, was sent off in Saturday’s 2-0 Premier League defeat to Chelsea after accumulating two yellow cards in a single game. His errors—first allowing a through ball to Haakon Bakker’s feet, then failing to close down Conor Gallagher—were not isolated lapses but symptomatic of a deeper crisis at Old Trafford.
Keown, whose own defensive prowess at Arsenal earned him the nickname ‘The Invincibles Hardman,’ has never shied from calling out tactical incompetence. His criticism this time is direct: the fault lies not with Martinez, but with Michael Carrick and his coaching staff. ‘Everything that could go wrong is going wrong at Manchester United,’ Keown stated, framing the defender’s struggles as a product of systemic oversight rather than individual failure. The implication is clear—if United’s defensive structure were sound, Martinez’s mistakes would carry far less weight. Yet, for the second time this season, he has been dismissed for errors that, under a different managerial regime, might have been mitigated.
Martinez’s red card was the latest in a string of defensive missteps that have defined United’s campaign. The Argentine defender was the lowest-rated player in the Premier League this season, a statistic that speaks volumes about his impact—or lack thereof—on the pitch. His apology for earlier comments about transfer spending underscores the pressure he faces, not just from fans but from a manager whose tactical vision has been repeatedly exposed as flawed. Carrick’s insistence on a defensive identity, without the necessary infrastructure to execute it, has left United vulnerable to counterattacks that expose their weaknesses time and again.
The Chelsea game was a microcosm of United’s defensive woes. Martinez’s second yellow came after he failed to track back on Gallagher’s run, a mistake that cost United possession and momentum. The red card sealed his exclusion from the final 15 minutes, a period in which Chelsea’s midfield dictator Conor Gallagher dictated play with impunity. Keown’s analysis cuts to the heart of the matter: if United’s defensive organization were sharper, Martinez’s individual errors would not be the story. Instead, they have become the defining narrative of a season in freefall.
For United’s fans, the question now is whether Carrick’s tenure can survive the cumulative weight of these failures. Martinez’s red card was not an anomaly—it was the latest in a series of defensive collapses that have plagued the club under his management. Keown’s intervention, while blunt, offers a rare moment of clarity: the problem is not the player, but the system. And until that system is overhauled, United’s defensive frailties will continue to haunt them.
