Collins signed for Sunderland in 2004 after playing for Dumbarton on a part-time contract. He has had loan spells at Hartlepool and Sheffield United during his time on Wearside and recently made 3 appearances for Wolves in the absence of Jody Craddock during a 2-month loan spell at Molineux.
Roy Keane had this to say about the 23-year-old's departure: "Neill is on his way and we wish him well."