Nick Barnes believes it could be time for one of Sunderland’s biggest assets to ‘move onto a better team’. Sunderland have racked up some excellent talent since Kyril Louis-Dreyfus joined the club. Even before they won promotion, the Black Cats had managed to lure the likes of Jack Clarke, Patrick Roberts and Dennis Cirkin to League One. Things then got even better back in the Championship, signing Clarke permanently and adding stars such as Dan Ballard and Aji Alese to their ranks. While this season has been particularly underwhelming, the brilliant breakthroughs of some of their youngsters h…