The last thing Manchester United need right now is a deal for a defender collapsing. The Red Devils rounded off their pre-season tour of the United States with a 3-0 loss against arch-rivals Liverpool. Despite the bitter result, there were glimpses of promise from Erik ten Hag‘s side – at least going forward, anyway. A backline of Aaron Wan-Bissaka, Jonny Evans, Victor Lindelof and Harry Amass was certainly less impressive, and it highlighted exactly why United needs more defensive reinforcements as soon as possible. The excitement around £52million signing Leny Yoro was quickly dampened after…