I think that the main reason for Guardiola to join Bayern was the board. Chelsea is owned by a Putin intimus, Man City by some megalomaniac sheiks. Bayern, OTOH, are an independent club with nearly 200k members, a democratically elected board and ex-footballers like Beckenbauer, Hoeness and Rummenigge on it who share 250 caps between them. And that is not likely to change, as the German football league sticks to a rule that forbids investors to buy more than 49% of the shares. Even if the rule were not in place, Bayern had no necessity to invite someone like Abramovich, as their bank balance is around € 100m. Positive, not debt!