I really doubt the Knicks have the trade assets to get Elton Brand this year. It might take an offer of Sweetney, TT, and Ariza just to get the Clippers to be willing to listen. Wilcox is even less obtainable because he has such a low salary that there's no way the Clippers would trade him. Brand is the PF they'd trade.
3)Nene- to say he is no longer needed in denver woud be an understatement, he is 6-11 and can play both the 4/5 and is a shot blocker, so he fills many of the knicks needs.
He is definitely not a shot-blocker, but I could see both teams doing a trade involving him and I'd probably support it.
I could see Isiah pursuing Curry, Chandler, Walker, and Shareef too.
I think the other players are unlikely.