Colback told the Sunderland Echo: "Midfield is my position. A lot of people have asked me where is my position, and it's obvious I'm not a left-back. I filled in there, but I've never been a left-back.
"I'm a midfielder and that's where I want to be, so hopefully I can get a run in the team there.
"The manager didn't even have to ask. He said he knew I wasn't a left-back, although I don't know whether that was a compliment or not!
"But he said I'm going to be playing midfield now and it's up to me to show I'm good enough in training and in games."
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