I do not actually know what happened to Manchester United in this season champions League but I have realised that Manchester United is not qualifying from the group match. It is first obvious that Bayern Munich has never failed to qualify from the champions League group match. So the one slot was off and the remaining slot was what Manchester United was supposed to fight for but they rather gave it to Galatasary
Considering that it's the group stage I don't think it's that important, because Bayern will get out of the group anyway and a win over Galatsaray has only a small impact. But I wouldn't make any predictions about the final so early, we don't know what kind of opponents they will have
Galatasary will kindly go for draw but even if they are eventually beaten by Bayern Munich, they still have better chances than Manchester United. So they will certainly not be under big pressure to play the match.