There's two schools of thought in regards to why Abramovich bought Chelsea. One is that he purchased Chelsea as protection from Putin. Putin was going after a number of Oligarchs that made their money during the Yeltsin/rigged election era and by buying Chelsea he became a harder target - random Russian Oligarch dies and it gets a small article in a couple of broadsheets, Chelsea owner mysteriously dies and it's world news. The other is that he purchased Chelsea under orders from the Kremlin - this has been denied by RA and he's sued publishers of a book that claimed this.So is this Abramovich selling Chelsea to try and protect his wealth or is this Abramovich selling Chelsea because Putin's decided he wants some money and Abramovich doesn't like bullets?
Answering your question, I guess it's the same thing. His high profile status protected him from Putin but has made him a huge public target for sanctions. Selling Chelsea is as much to do with turning the club into cash as it is about lowering his profile, hoping that he can avoid sanctions further down the line. Like all Oligarchs, his money is Putins money if Putin wants it. The alternative is usually an unresolved death.