If we are rating based on recent performance and form, Barcelona should be favored in this game especially as they will be the host; but I am also considering how bad Bayern Munich's performance was in their last three games across all competition, they can't keep dropping points, they will need to start winning games by all means and this their match against Barcelona will be an important match for them because Champions League is an important factor for Vincent Kompany because Bayern is indeed a big team and will want to make it to the next round of the Champions League.
Flick on the other hand will want to end the embarrassment Bayern Munich is doing Barcelona even though he was one of the coaches that made it happen then; therefore, Barcelona can equally win the match since they will be playing the match at camp noe.
Barcelona performance and his record is good which makes him more favorite but this has also happened in some matches of Barcelona due to which both have been kept on equal performance. But still Barcelona's game has been well played and liked this season.Bayern Munich will play this game well if this game is against Barcelona then this match will be nothing but a draw. Because the players on both sides are good and hard working. I think anything can happen in the match which can also cause Barcelona to lose. We will see one of the two teams dropping points.