I think Cotchin is done, because he can't get himself "up" each and every week, like he used to. Will he still have moments of brilliance? Yes, of course.
But I think they are going to be fewer and further between. The reason why I could see us keeping him on, is that we've asked people to renegotiate their wages in order to retain other players. You could always add another year to a player who was at the end, for a top up before retirement and the 15 game season Harry mentioned above.
But he's no longer the Chimp. He's willing himself to get up from a contest. rather than willing himself to the next one at the moment. I'll be more than happy to see him freshen up over the bye and have a last gasp burst to finals, but with 9 games plus anything in September, I think this should be his swansong. I don't want to see the almighty Chimp running around like a busted up veteran who is getting beat by players with half his talent.