Paul Scholes has taken aim at Manchester United pair Scott McTominay and Fred after the 1-0 defeat to Arsenal on Sunday.
United boss Ole Gunnar Solskjaer opted for a midfield diamond against the Gunners, but they never got a foothold in the game.
The hosts did edge possession with 53%, but Scholes says they were far too defensive and never tested Bernd Leno.
Arsenal deserved their win, which was given to them by Pierre-Emerick Aubameyang from the penalty spot.
And former United midfielder Scholes was fuming with the performances of midfield pair McTominay and Fred.
“It’s as poor as I’ve seen Manchester United at Old Trafford to be honest with you,” Scholes told Premier League Productions.
“You have to give Arsenal credit, they were very good but on other hand you have to expect more from United and the two midfield players especially.
“I said at half-time if you’re going to get your best, most creative players who can score goals on the ball then the two in midfield have to have some kind of possession and some kind of control but the quality was missing from them two.
“They were playing as centre halves, not central midfield players.”
Scholes though was impressed with Thomas Partey, who looked everything that United are looking for in their engine room.
“He’s an all-round midfielder,” Scholes said of the Arsenal new boy.
“You don’t see many players like that these days.
“Midfielders are attacking midfielders or holding midfielders but a midfield players’ job is to do everything.
“You have to contribute with everything and today he did a brilliant job in all departments.”
Keane wanted Partey at United
Roy Keane was also impressed with £45m Partey, who swapped Atletico Madrid for Arsenal on deadline day.
“We said before the game, this guy’s no mug, he’s played for a big club, he’s played in big competitions.
“We saw today, when you watch a player live that’s when you can judge a player.
“The more I look at him the more I wish he was in Man United’s midfield.
“Big, strong, aggressive, obviously going back with Arsenal I had my battles with Patrick Vieira, I think this kid has got a chance of matching what Patrick used to do.
“He’s big, he’s strong, he’s aggressive and he likes to pass it forward. He can deal with the ball, he looks comfortable on the ball, just small little details, composure, good first touch, retaining possession, that’s the name of the game.”