Also to those looking at Bayern and PSG.
Having thought about it, assuming they were offered, they would have considered it, don't be naive enough to think they wouldn't. However there are some big factors which separate those clubs from Chelsea and City:
Bayern - Here is the 50+1 rule of the Bundesliga - In order to obtain a license to compete in the
Bundesliga, a club must hold a majority of its own voting rights. The rule is designed to ensure that the club's members retain overall control, by way of owning 50% of shares, +1 share, protecting clubs from the influence of external investors.
PSG - They finally have influence with UEFA, they have a seat on the executive board and via beIN their owners have invested too much in the CL already to simply walk away at this point.
There were some massive hurdles for those clubs which probably made it a no go, had they not had those, I don't believe for second they wouldn't have been persuaded to sign up, the same way Chelsea and City were.