Evans said: "I spoke to Sir Alex [Ferguson] and he asked me where I wanted to go. I said without hesitation Sunderland and he phoned Roy Keane there and then. I can't wait to get going."
The Northern-Ireland international had his first training session yesterday and is widely expected to make his debut on Saturday in the F.A. Cup versus Preston.
The whizkid said: "I'm delighted it is done and I hope to be involved on Saturday.
"Sunderland's a massive club. I remember watching them when Niall Quinn and Kevin Phillips were scoring goals in the Premiership, thinking what a good club they are.
"Going out on loan is all part of my football education. I want to improve, make the next step. Roy Keane was a big part of me coming here, a lot of players look up to him, including me."