The bundesliga is a big league but IMO not as challenging as the EPL. Any player that does well in the EPL, will a little more effort can do better in the Bundesliga and Mane is the type to always want to give his best. I watched some training videos of him with the Bayern and i can say for sure that he will be one of the highest goal scorers if not the highest next season in the Bundesliga. He also just won the CAF African player award and that will certainly be a boost to his morale for the new season. Bayern didn't make no mistake, Mane is a great signing.