Unfortunately, I think you are right.
He was good last night, which just goes to show he is one of those players who shouldn't 'try to get through the game' when he is injured. Tex and Sloane are ones we need 100% fit and their 90% isn't as good as the next bloke.
He's contracted for next year as well, but he is a team first person, so if it's time to retire, it's time. Might be good for both parties to get some fresh air.
Despite all the media BS that goes onto him, wait for all the clubs to line him up for a coaching role.
If we're trying to nudge him into retirement, a 1 year coaching role to make up for the 1 year left on his playing contract might be part of the deal to get him to hang up the boots. Just push out Hart / Reilly / Wright (or all of the above) to make room. Wouldn't be any worse.