Sunderland have been told they have two players who could be a real ‘game-changer’ for them next season. Sunderland have endured one of their most disappointing campaigns in recent years, suffering 19 defeats in 41 games – the joint-fourth most in the Championship. The Black Cats have faced the downfall of having such a young squad, while they haven’t been helped by injuries either – though that seems to have been a running theme for years now. Niall Huggins, Dennis Cirkin, Dan Ballard, Jenson Seelt, Aji Alese, Corry Evans, Elliot Embleton, Jack Clarke, Pierre Ekwah, Bradley Dack and Nazariy R…