He’s back! Having failed in Cardiff to which the general reaction was “so what?”, the Norwegian returns to Manchester United as caretaker manager until the end of the season at which stage the seat will be judged to have been sufficiently warmed for the derrière of Mauricio Pochettino, (unless, of course, Solskjær can win the Champion’s League, the FA cup and finish in the top four). He will be assisted by Mike Phelan who has the undoubted experience of having…