I don't know a whole lot about the man but I do know he's made himself a considerable sum of cash in other business, he's now a senator in his home country, and has married into a hugely wealthy and influential family in Monaco.
Somehow along the way he also seems to have ended up with owning 20% of our football club which he allegedly got for a pittance and despite seemingly being happy to observe most of the proceedings from the shadows.
I've no idea what his game is but he'd have been off like a shot before now if he had no interest in seeing the club move forward.
I'd seen some reference recently to him moving to London full-time at some stage soon (a 2020 plan that was thwarted by Covid). Maybe this is his time - maybe SD knows that this is his time, too, and that's why he is being ultra-patient - because he knows JS has the clout (and now maybe perhaps the time) to get this shitshow turned around?
Basically, I've no idea where he can / will take us, but I do know it would foolish to dismiss his capabilities based on his 'sleeping partner' role at SAFC so far.