Bayern Munich are interested in recruiting Kompany because of his style of play which focuses on fast attacks and is very flexible in his approach to game development, with a faster and more aggressive approach which is also often used to quickly break through the opponent defense, but the sharpness of the current attack line In fact, it is not supported by a strong defensive line, in the Wolfsburg match it was clear that there were several problems that the kompany had to immediately fix, namely the lack of optimal defensive players and it was also seen that the defensive midfielders were always late in breaking up attacks built by the Wolfsburg players in that match , that's why I think that Munich was very lucky to be able to secure their victory against a weak team like Wolfsburg and can we imagine what would happen if Bayern Munich faced teams like Leverkusen and Dortmund in the next match?
While that is great for a team like Bayern, because they have the squad, you and him and even Bayern management is forgetting why that was his system and why he will fail that at Bayern.
The team he managed last year relegated, meaning that he was managing a bad team, worse than almost every club in the premier league, that means he was defending most of the time because he didn't had the players to keep the ball and try to create chances the way City can do, it's clear that he had to just defend and hope for a counter attacking chance. So, his team would just park the bus and try to do long passes and use fast attacks to get a chance if they can.
However, Bayern is a better team, other teams will park the bus against Bayern, they will defend with 7-8 people, and that means we are talking about Bayern that will not have a chance to attack fast, how could they, everyone will be at defense against them, so there is no fast attack against them at all, not possible.
This is why the strategic difference between the clubs will show eventually, they barely won their first game, lets say that's just match shape issues, but I guarantee you that the weakness in the logic of the strategy will show itself eventually.