But indeed, it seems that a draw might be very possible to happen but at least, because Barcelona has Hansi Flick and also Lewandowski who previously had a big influence at Bayern Munich and now they play and work for Barcelona.
Predicting the draw may not be a good option because this two clubs has always not been on favour of draw matches and is been a while I saw them play draw, so is mostly very rare cases to see Bayern Munich and Barcelona play a draw match because it always end against against one side, so actually I'm only saying this based on how it has always been for them but since there has been a lot of new development on this season from the both sides your prediction could also be true because Bayern Munich will be doing a lot of management on there defense that day because they still have an unresolved issue.
There is nothing wrong with saying that there will be a draw at the end of the match even though I agree that the past meetings between these two teams have always ended in one side, referring to H2H Bayern Munich has the advantage but currently the conditions are different Barcelona in the hands of Hansi Flick knows a little more about Bayern Munich's weaknesses, of course Hansi Flick has implemented a plan like what will be used later to get 3 points, on the one hand this is Kompany's debut as a coach against a strong club he also wants to prove and present 3 valuable points.
However, in this match I would prefer Barcelona, they clearly have the advantage of playing in front of supporters and so far they have been quite stable in every line.
On the other hand, Munich needs polish in its defense line.