Ole Gunnar Solskjaer has been warned that Jadon Sancho's lack of minutes and form will be "causing unrest" at Manchester United.
The winger was signed in the summer for just over £70m having long been on the club's radar.
However, with United's squad now heavily stocked with attacking talent, Sancho has found it hard to play regularly having failed to make an impression early on.
The 21-year-old has made 13 appearances, six of which have come as a starter.
His blistering form for several years at Borussia Dortmund caught everyone's attention, but at United he is yet to register an assist or score.
Former United defender Paul Parker believes he's sporadic selection will be doing nobody any favours at Old Trafford.
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He told BonusCodeBets: “If Manchester United publicly chased Sancho for 18 months, and then buy him for £70 million, they simply have to get him playing.
"He’s an Englishman, he knows football in England and there’s no excuse for him. For anyone to come out and say he needs time to adjust to the Premier League is rubbish. It’s football. He’s English and he understands it.
"He went from an English side to go to Germany. His game, and everything about him, would have improved by going out there.
“Unless Jadon Sancho is doing something in training that the manager doesn’t like, or that he’s got to play others ahead of him, if you’re the person that’s paid that £70 million, you’d be asking why they’ve paid all that money for him, alongside his wages which will be over £100,000 a week.
"Are they going to give him the opportunity to earn some money? He has to play more than one game so he can get a run in the team and feel a part of it.
"All it’s doing is causing massive unrest within the club, and definitely with him.”
Sancho's lack of minutes and performances have seen him axed from the England squad as his difficult period continues.
Marcus Rashford, Mason Greenwood and Edinson Cavani are among the player providing competition for United's summer signing.
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A recent switch to a 5-3-2 formation has seen Solskjaer overlooked Sancho, who has only been introduced from the subs bench.
Gary Neville said recently: "Sancho, if he's not careful, is going to end up exactly the same (as Van de Beek).
"Sancho has played in some pretty appalling team performances. He's come into a club that's looked completely disjointed in terms of their football.
"He played in a far better team unit at Dortmund. He's come in here thinking, 'what the hell am I in here, what is this?' There's no organisation, there's no structure, the defensive work rate is poor."