With Palace I think how they handle the Zaha situation will be key. He is out of contract in the summer and he is 30, you would think he would sign on but you never know these days.
He would obviously command more in salary but at age 30 the duration of contract will probably be the problem for Palace, can't see them being too happy giving anything over 3 years?
Basically they need to start planning life after Zaha I think at this point.