Stuart Pearce has criticised Jose Mourinho for publicly blaming Luke Shaw for his error that led to Watford's second goal in the 3-1 defeat of Manchester United this weekend.
The 21-year-old Shaw, who suffered a horrific leg break last season, was reportedly playing with a groin injury at Vicarage Road.
He may well have been at fault as Camilo Zuniga cancelled out a Marcus Rashford's 62nd minute equaliser when he netted in the 83rd minute after Etienne Capoue's 34 minute opener, but Pearce feels the former Chelsea, Inter Milan and Real Madrid manager did more harm than good by publicly chastising his young player.
Mourinho's comments came soon after similar remarks following the City game where the Portuguese boss substituted Jesse Lingard and Henrikh Mkhitaryan at half-time.
Pearce told Sky Sports Now: "He looked at Lingard after the derby game and said it was too much for him. He blamed Luke Shaw for the second goal [against Watford]. You think he's probably better off not having a pop at the youngsters.
"What he needs to do is probably pull [Shaw] aside, get him in front of a video and educate him on how to play the game. It's difficult for me to tell Mourinho how to coach and educate – he's the best in the world at it."
Mourinho, who has now suffered three consecutive defeats for the first time since being manager of Porto in 2002, following losses against Manchester City, Feyenoord, and the Hornets, had said: "I knew I had a task. But the first Man City goal [during the 2-1 defeat last weekend] and this second goal, you can find incredible similarity.
"[Aleksandar] Kolarov has the ball in a difficult situation in the corner and my player instead of going up and pressing decides to give him space. Today for the second goal, [Nordin] Amrabat on the right side, our left back is 25 metres distance from him, instead of five metres.
"But even at 25 metres, then you have to jump and go press. But no, we wait. This is tactical but also a mental attitude. In a couple of weeks, everything like this becomes perfect. That's my job."
Shaw was substituted for Memphis Depay two minutes after the goal was conceded.