He criticised the £73million summer signing, who is yet to really impress at the Old Trafford club.
Henry’s frustration at the talented former Borussia Dortmund man stems from the fact that he regularly cuts inside.
In the studio as an analyst for Amazon Prime, Henry said: ‘Those are the types of players you want to watch but he is playing within himself.
‘When you are in a one-on-one, you should take a player on. But it was Luke Shaw who was forcing him to take on those one-on-ones.
‘What happened to beating your man on the outside? They often want to go too much inside. Just beat your man on the outside and be lethal.’
After Scott McTominay had put United ahead on Thursday night, Sancho came up with his decisive contribution of the game.
He danced inside and fired a shot towards the far corner, only for Ben Mee to stick out a leg and divert it into his own net.
Sancho has not looked the player he was for Dortmund last season but fans will be hoping he can gather momentum under the Ralf Rangnick regime.