Rio Ferdinand has questioned the impact of Ralf Rangnick has insists there has been no improvement among Manchester United's players since the German's arrival.
United dropped two points at the weekend, throwing away a 2-0 goal lead at Aston Villa, a result that saw them fail to make ground on the top four.
The Red Devils are sat in seventh, and voices of concern have been raised from within the camp - with Cristiano Ronaldo speaking out about the level of application from some of the younger players in the squad.
And Ferdinand has echoed those sentiments, insisting United have failed to raise their game since Rangnick took charge in November.
'The manager talked in his first press conference about improving players and I’m still yet to see that,' he said on the Vibe with Five podcast.
'Has he had enough time on the training ground will be his argument I’m sure. But these players need improvement because they’re not doing it. Almost every player, to a man, is a shadow of their former self. I don’t see anyone going best the levels they were at before as yet.
'Great managers improve people. We’ve seen what Thomas Tuchel’s done at Chelsea in that short space of time. We saw players elevate and become better players, consistently for a sustained period of time.
'Rudiger, before Tuchel came in, wasn’t even getting stripped. They were trying to sell him, his confidence couldn’t be any lower. He’s rejuvenated. Alonso has come while Chilwell has been injured. Rejuvenated. Playing well. Reece James went another level.
'He created an environment where the players felt comfortable. You do need the results but you’ve got to start getting it from somewhere.'
United face Brentford on Wednesday evening, a match that was postponed during the Covid-affected festive period.
They have two games in hand on West Ham who are currently sat in fourth having played just 20 matches, although Tottenham, who are three points above them, have played just 18 times this season.