Birmingham City boss Lee Clark is backing Jack Colback for success at Newcastle United.
Colback has sparked controversy after leaving Sunderland for Northeast rivals Newcastle.
Clark, who also played for both clubs, told the Evening Chronicle: "I've got to say, I think he's a good player.
"He's done really well for Sunderland when I've seen him play so that will be a positive signing. He's born and bred in Newcastle. When you hear him talking you can hear that Geordie twang.
"Listen, when you make that move you have to hit the ground running.
"You have to start well. The fans take to you if you do. That's what happened when I went the other way.
"Once I got on the pitch I done the business."
