Cam Reddish is available, but I think he wants a bigger role (to maximize his free agent signing this summer) which wouldn't be here, but he'd be an interesting younger guy that could theoretically be here long term though. Not sure what the Knicks would want for him, but I'd at least make a call to his agent and the Knicks to gauge interest.
Gay can probably be had relatively cheaply. Can't see that he has much use in Utah these days.
But other than them, the team is much better off just making a strong push for guys like Carmelo and Dwight. They seem like far better options. Also, why Boston should have used the bigger TPE and actually gotten some real depth on the roster.