For years we were struggling for an international class right-back. And O'Donnell came in and has done okay defensively. In the absence of any real alternatives he did a passable job. The problem is we have since switched to a 3-5-2 which exposes the all-round game of your wing-back: they need to be proper two-way players who can attack and defend. O'Donnell is a decent Scottish Premiership standard full-back, but he's not a wing back, never mind an international one. The other problem is the emergence of Nathan Patterson at Rangers who has played a handful of games at the end of the season, but already looks a couple of levels above O'Donnell and whose dribbling and technical ability would make him a great fit for a wing-back role. Clarke managed O'Donnell at Kilmarnock so he has this overbearing loyalty, but which is actually undermining the player by putting him into a position and against a standard of opposition he's not comfortable with.