Both have their each other's advantages, Barcelona has a solid squad while the Red Devils have experienced tacticians. The match will likely be a very interesting match, but it won't be easy for either of them. I have a feeling that Barcelona will win this match, head to head and their positions in their each leagues, on paper Barcelona are more likely to win
The Match begin on February which I think too much time for both to repair in what their week. We don't know what happen in next after world cup and winter windows open. Maybe Barcelona didn't have plan to add a new player but while MU is very busy to look who can fill Ronaldo, who is know because in football every second will change fast. And, MU have habit if meet strong club they always fight hard.