Measuring the decline against the eye test

Wayne Rooney made a bold claim this week, asserting that Mohamed Salah's legs have gone. It is a harsh assessment for a player who has spent the last five years functioning as the most reliable output engine in the Premier League. When you isolate the data, Salah remains a primary threat, despite the stylistic shifts under Arne Slot.

Salah’s season metrics tell a story not of physical regression, but of tactical adaptation. While his touches in the final third have become more selective, his efficiency remains world-class. He has clocked 22 goals and 14 assists across all competitions this season. Those aren't the numbers of a player whose burst has evaporated.

Rooney likely points to a dip in successful take-ons per 90 minutes. That statistic, however, ignores the increased defensive responsibilities Salah has adopted to cover for Liverpool's inverted full-back rotations. He is operating in tighter zones against lower defensive blocks, which naturally limits the explosive space previously available in transition.

The Old Trafford pressure cooker

Sunday’s match at Old Trafford is the ultimate litmus test for these narratives. A grudge match against Manchester United forces the game open, dragging players out of their disciplined defensive shells. This high-transition environment is where Salah has traditionally thrived, hunting space behind an aggressive United backline.

If you look at his heat maps from the last three meetings at this ground, the patterns are identical. He drifts into the half-space between center-back and full-back before cutting onto his left foot. Unless Erik ten Hag has instructed his left-sided defender to sit 10 yards deeper than usual, that space will exist in the 14th minute and beyond.

The criticism itself serves as heavy fuel. Salah has never been one to ignore the external noise, often using post-match interviews to address his detractors directly. As reported by the Mirror, Salah has already pushed back against the narrative that his best days are behind him. He tends to perform at his peak when the stakes are personal.

The flaws in Liverpool's setup

Liverpool is not perfect, and relying on Salah to punish the United transition carries inherent risk. The primary weakness on display this season has been the defensive transition speed of the midfield pivot. If United disrupts the build-up play, Liverpool is often vulnerable to long balls played into the channels.

I have tracked the defensive actions, and the team is currently yielding an xG per game of 1.4 during away fixtures. That is a higher figure than any title-winning side from the last decade. It creates a path for United to stay competitive if their forwards can execute high-press turnovers.

Despite this, the gap in technical quality between these two sides is currently too wide to ignore. Liverpool possesses the composure to play through a frantic Old Trafford press. Expect Salah to exploit the lack of defensive support for the United left-back, leading to a decisive involvement before the 70th minute. He will find the net, and he will make sure the scoreboard validates his continued relevance.