Hiring Kompaney in Bayern Munich was not all they wanted to do in this team. Since they had a season without any achievements and this put Bayern Munich under pressure they are not trying hard to do their best and hire more players to get their place back from Leverkusen and win the Bundesliga title again.
So far they have hired one player and two other players are linked to this team. João Palhinha and Michael Olise are both close to signing their contract with Bayern Munich.

I think Michael Olise would be sorted out in little time interval but as for Joào Palhinha, I don't think that will be done in the next couple of weeks, it could be achieved but that would be immediately the UEFA EURO'S has come to conclusion. Fulham are proving so stubborn that, they don't want to let him leave the club.
I still don't think Bayern Munich stands a chance against Bayern Leverkusen even with this additions to improve the squad. I'm not downplaying Vincent Kompany but he is not tested and trusted when it comes to handling a big club.
He had a good season with Burnley in the Championship but let's wait until he makes his official debut in the Bundesliga League Competition.
As much as I'll love to see him do well, he is not on the same levels as Xabi Alonso. I hate the comparisons I see online.