Youth team play Ipswich tonight in the FA Youth Cup
Blake said: "The Manchester United game is history. We've not talked about it and not mentioned it since the following day.
"It has not been a problem taking the players' minds off that game. After the match I told them they did a professional job and should now move on to the next game.
"This bunch I'm working with are not that way inclined anyway. They wouldn't let it go to their heads."
The match must be decided tonight, it will go into extra time and penalties if required.