Callum Styles has made an interesting claim about Tony Mowbray following his arrival at Sunderland. Sunderland had been on the lookout for a new midfielder during the January transfer window and it wasn’t until the latter stages that they began to make their interest in Callum Styles known. The Black Cats had initially looked set to snap the midfielder up from Barnsley after entering talks, however rumours of a move quickly quietened down and the club looked as if they were back to square one. However, it wasn’t until deadline day that the deal was back on, and the 23-year-old eventually secur…