There is no room for misty-eyed sentimentality if you want to dine at the top table. The continued strength of the first team has to come first. We cannot carry players who are living off past glories, whoever they are and whatever their legendary status.
Absolutely he belongs in the City hall of fame, alongside Yaya, who is another whose form has dropped off significantly. It remains to be seen for the other "class of 2012" legends, David and Vinny, but for the last couple of seasons the ominous signs have been showing, particularly with persistent niggling injuries and recovery times. I'm hoping David has another couple of years in him, and he can clear this ankle issue, but I am concerned for big Vin.
There are the odd few players who are able to play at a very high level into their mid to late thirties, like that freak Griggs, but for most nature is cruel, speed and reaction times drop off rapidly after thirty or so, sadly it appears Zabba is one of them.