Genuinely think he'll retire after Sunday, would be a fantastic way to go out.
I've no doubt the club will offer him a role but I reckon he'll go the PFA route...
He'd be walking away from ~£5m. I can't see it.
Wasn't the new contract he signed for an extra year but on much reduced wages? So it's unlikely to be as much as that.
Not that it matters, because your point is still correct whether he's saying goodbye to £5m, £4m, £3m or any money.
He also came later to the professional game late, so I can easily see him having a year or two at Bristol City or similar.