Manchester United have suffered injury problem after injury problem this season and Erik ten Hag would no doubt love some positive news between now and the summer. Willy Kambwala, Lisandro Martinez, Jonny Evans, Victor Lindelof and Raphael Varane – all centre backs – were ruled out against Burnley on Saturday. Mason Mount was at least able to return but another United injury never seems too far away. Tyrell Malacia hasn’t been seen all season, Luke Shaw is injured again and Anthony Martial hasn’t kicked a ball since December. It has been a case of one injury after another for United this seaso…