Sunderland may have been handed a damning transfer prediction. Sunderland get underway in the Championship this weekend, with a game away at Cardiff City. It’s Regis Le Bris’ first competitive match as Sunderland manager and it comes after a mixed pre-season and summer transfer window. Last time out, the Black Cats drew against Marseille in what was arguably their best performance of the summer so far. But it was a summer with some mixed results, most notably a defeat vs Gateshead early on. In the transfer market, Kristjaan Speakman has been faltering once again in the club’s bid to sign a str…