No, he should only go as a left back. Not as LW, and not as RB.
Surprised how many calls you get for players in untried positions.
Not only is it a gamble ahead of a bunch of in-form wingers, but it also weakens the left back spot.
Leckie ditto for RB
well it will be 4 at the back under Bert, so if you mean as actual full-back thats suicidal.