Never expected him to call it quits to be totally honest, what else is he gonna do? He's boxed since he was about 15 or something haha and he's a warrior, will be interesting to see how he does down at SBW with the extra weight cut, hopefully does well.
The man is tough and determined. Add to the experience he has already picked up and I see no reason why he can't better himself, let alone attain his current 'level'. Simpson is still a force on the Domestic scene. If he can make 122, cool, if not he can still run the gauntlet of what is still a good domestic div' and smash some peeps up.