Andy Cole has completed his move to Sunderland after signing a one-year deal, but the veteran striker will not be available against Liverpool.
He told the club's official website: "I'm very excited to be here.
"It is another challenge and hopefully I can use my experience to help the young players at the club. I had a few options and I just thought this is a good one.
"I want to get a good week or 10 days' training under my belt and go from there."