Manchester United manager Jose Mourinho said his squad lacks "mad dogs" and some players do not understand that "simplicity is genius" after seeing his side draw 2-2 at Southampton in the Premier League yesterday.
Still seventh in the table, the Red Devils could end the weekend nine points off the top four.
United conceded their 22nd and 23rd goals of the season inside the first 20 minutes before levelling it up before half-time but Mourinho refused to blame the system or his makeshift defenders for another slow start.
Rashford's profligacy in front of goal against Young Boys in the Champions League in midweek provoked Mourinho to display his frustration on the sidelines. "(Not winning) has to do with the characteristics of the players.
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Liverpool players can hardly be blamed for being angry, yet a 15-second clip has emerged showing that they perhaps can't complain too much.
"We lost so many balls in midfield", Mourinho told BT Sport. And when the players don't understand that simplicity is genius, especially in some parts of the pitch, and they keep and keep and keep in going to complicated football it's hard to have that continuity'. We don't have many mad dogs - the ones that bite the ball and press all the time.
"I thought he was outstanding today", Mourinho added.
Saturday's game with Southampton certainly looked like a relatively simple way to get positive momentum going but it proved to be anything but.
Shaw drilled a shot wide of the far post off a 61st minute corner kick as United began to reassert its control of the match. "And when he does that it's obviously another goal".