I've been looking at lists of players whose contracts expire in the summer, assuming that we may have to be quite shrewd once again in the transfer market - it's made for some interesting reading! here's the website - http://www.transfermarkt.co.uk/en/spieler/vertragsende/basics_GB3_2012.html
That page is for league one players but you can see pretty much every out-of-contract player from most European leagues on that website.
Anyway, Ched Evans contract is up at the end of the season, as well as Coutts from PNE and Joey Gudjonsson from Hudds, 2 very useful midfielders.
There's literally hundreds of players available on free transfers at the moment!