Sunderland enjoyed a fairly positive summer transfer window, despite a worrying start. The Black Cats’ summer took a while to get going after fans were forced to wait months for Regis Le Bris’ appointment. They brought in the likes of Simon Moore and Alan Browne early on, but most of the action came in the final weeks of the window. While Sunderland snapped up the likes of Chris Mepham and Wilson Isidor, they also managed to keep hold of most of their prized assets. Jack Clarke eventually got his move to the Premier League with Ipswich Town, but the likes of Jobe Bellingham, Chris Rigg and Dan…