Bayern are having the best of times. They are playing very steadily and I even think they can reach the Champions League final. Although Galatasaray are also playing well both away and at home. But I think it will be an easy game for Bayern. Galatasaray are strong in the Turkish League, but Bayern are much stronger.
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