Chelsea 1-2 Manchester United
Chelsea is a team consisted of young players now.
They don't have a lot fo experience in knockout games and I think that this fact caused them to lost the game against the Red Devils.
In my opinion it is not a factor that is a reason for losing the match, because Manchester United are a great team that is not easily defeated by Chelsea, even though young players they are still very great, but if it rivals Man. United are still losing.
It is true, in the match. Chelsea mostly reduce their young players, Either this is a past strategy used to see the extent to which this young player can play. No need to be discouraged, Chelsea must focus again on UCL and LP.