It may not seem fair, but, in Realpolitik terms, their money is a potential source of funding for him. As Angus Roxburgh puts it in this piece https://www.theguardian.com/commentisfree/2022/feb/23/obsession-sanctions-oligarchs-putin-hurt-russian-leader-ukraine about sanctions, "Putin allows...
Sporting Integrity you say? Chelsea? Can we please have a smilie for a spit take?
https://www.chelseafc.com/en/news/2021/04/18/club-statement
https://www.bbc.co.uk/sport/football/50261117#:~:text=Chelsea%20were%20given%20a%20transfer,in%20May%20after%20an%20appeal.
I've already had to cheer...