Newcastle United believe that Paul Dummett could be forced to miss their match against Watford at the weekend.
With Paul Dummett picking up a knock in the Magpies’ match against West Ham United at the weekend, McClaren’s options are limited on the left hand side of his defence.
And, as a result, Colback could be given the nod to start at left back in Newcastle’s game against Watford on Saturday.
“We might see a bit more of Jack at full-back,” said McClaren. “It’s a possibility, although we don’t want to because Dummett has been doing very well there. With the injury, we had a little look at that. I thought it was very good, and Henri (Saivet) stepped into midfield well.
“You need that, you need a squad with options.”
Colback has played at left-back before in his career, but he is far more comfortable in a central midfield position.
Newcastle will have cover for him in the middle of the pitch, if he is to move into a more defensive role though, as they have recently brought in both Jonjo Shelvey and Henri Saivet.
The Magpies go into their match against Watford having beaten West Ham 2-1 at the weekend, to move out of the relegation zone.
They have already played at Vicarage Road in the FA Cup this season, however, and they were beaten 1-0.