Hopefully, he does not retire. I would certainly understand though. NFL football is a very, very real health risk. He has a family, enough money to last several lifetimes, nothing left to prove in his career, and life after football to think about
Maybe I am just too optimistic. But I do suspect he will want to try and run it back, because if the Rams can do that, and if AD99 can keep playing at this amazing level (which, of course, he can!), we start getting into the greatest defensive player of all time conversation, and maybe even the 2nd best all-time player period after Brady. Some might already quite reasonably argue that. But another Super Bowl ring or two likely cements it, IMO, and I suspect a competitor like Donald, if the Rams bring everyone back, would want to give it a shot or two to try and get that undisputed GOAT status.
It certainly seems like Donald will call it quits once this window is over, even if he does keep playing. And who can blame him.