Gift shop, museum, and grounds staff are probably safe, as well as many of the people in the administrative hierarchy. Tony Daley and the physios as well, possibly. Everyone else in coaching staff should expect their P45, and I'd expect a completely new board in place too from day one - you don't spend all that time getting a takeover through and then start looking to fill those kinds of positions after it's done, you get people ready beforehand (just as seems to have happened with Lopetegui).
I can't see Li having day-to-day involvement in the club all the way from China, so that new board will include someone to be his direct representative, I imagine, but no reason anyone in those ranks should be expected to be from China. After all, the Chinese state's plan for turning their country into a major soccer power is pretty much "spend millions hiring European and South American coaches and players".