Louis van Gaal has been slammed by the Manchester United players over his tactics.
The Dutch boss saw his side collapse to a 3-0 defeat away to Tottenham on Sunday.
Marcus Rashford was taken off at half-time and surprisingly Van Gaal replaced him with Ashley Young.
And according to Manchester Evening News, United's players are at a loss when it comes to their manager's decisions.
A source told the newspaper: "Players haven't got a clue what the f**k his substitutions are all about."
United have been warned against signing Zlatan Ibrahimovic.
GETTY
Manchester United have been warned about Zlatan Ibrahimovic
The Paris Saint-Germain forward is out of contract with the French giants at the end of the season.
United have been credited with the strongest interest in the controversial Swede.
But David Ginola has explained why the Red Devils should avoid signing the 34-year-old.
Wayne Rooney - 5 things you need to know
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"I don't want to see mercenaries in football," Ginola told talkSPORT.
"I want to see people who know inside out what the history of the club is all about and when you wear the shirt, you really play for them.”
Wayne Rooney appears to be edging closer to a return to first team action.
Rooney, who has been nursing a knee injury for the past three months, played an hour of the Under-21s game against Middlesbrough.