Nah - he'd just miss the British GP...
Eddie retired when the time was right (or maybe a season late, but never mind). He's too old to come back, and if he still wanted to race at all he'd be in sportscars or something.
He is, was and always will be a major league playboy. And with a couple of hundred million dollars in the bank*, why not?
*
(source: Sunday Times Rich List - 157 million GB Pounds)