Jose Mourinho’s side lost 21 as the glaring of Paul Pogba overlook and Phil Jones’ own goal guaranteed they passed up a chance to high Champions League Group H.
United, who were assured of a place face Liverpool in the Premier League.
Fletcher said it would be”suicidal” to play an”open game” contrary to them.
“There were questions . It feels just like players who have to have some place to have return [and also haven’t established themselves] also it has kind of back to square one. It had been slow disjointed.
“They are not drilled to play Liverpool in a open game.
“It will soon be guidelines to play Liverpool’s half, overlooking midfield out. You will probably find Nemanja Matic and Marouane Fellaini and pace either side of Romelu Lukaku.”