Danny Murphy singled out Lisandro Martinez and Casemiro as two players who have to improve defensively for Manchester United.
United made a terrible start against Nottingham Forest and were two-nil down at Old Trafford within four minutes. Both goals were avoidable and symptomatic of the poor start to the season United have made.
They eventually fought back to win 3-2 but the defensive work of Martinez and Casemiro, two of United's best performers last year, concerned Murphy.
Analysing the chances Forest created, he highlighted their drop in performance. "It's poor set-up and they find themselves one-nil down," Murphy said. "This one is lucky how it comes off Boly but Wan-Bissaka is the wrong way, Casemiro doesn't jump and Dalot loses his man at the back too. Want to join our MUFC Pro club for a totally ad-free version of the MEN's dedicated Manchester United FC app packed with premium features? Click here . READ MORE: Manchester United manager Erik ten Hag drops transfer hint ahead of deadline day "They had to chase the game but they didn't defend and they weren't disciplined.