But Chelsea's money is so closely connected to the Russian government and all the horrific things they've done?
I saw a comment which suggested Pep wants him to rotate with Gundogen in the 8 position and £100m for a rotation role seems a lot. But, as ever, transfer fee relates to budget/want of buying team and strength of selling team's negotiation position more than anything. Wages are probably a better judge of how much a player should be rated and Grealish will be paid very well - he's got the potential to be a top, top player.
Pep has done many wonderful things for football but he's never tried a club where he doesn't have massive amounts of money. Managers walking away from difficult seasons where they're not going to get 100% of what they want in order to protect their reputation is a Pep'ism as well and a less positive one.