Of course it was a good choice when he moved here because here he has a very big chance to be able to get the title that he never got with Tottenham. He can only play well there and also get individual awards, but as a team he cannot get it because it is very difficult for Tottenham to compete with other big clubs. Whereas here he is closer to a title.
He's worked with top managers and top players over the years as a Tottenham Hotspur player and has no bad relationship with his mates. I think that's the key to his success during his time as Tottenham Hotspur player.
Playing for Bayern Munich isn't a difficult task I must say, besides he successfully played in a league that's tougher than Bundesliga, why won't he succeed at Bayern Munich. They also have key winger's who makes the attacking and chances creation easy for Harry Kane.
I must say I'm impressed with Serhou Guirassy, he should make good sue of his chances and leave for another club currently in the Champions League or aiming to get in. He's a very quality attacker.