By Tom Victor Sir Jim Ratcliffe has maintained Manchester United’s success is down to more than just the identity of the manager, insisting there’s no “simple fix” as he prepares for talks with current incumbent Erik ten Hag. Ten Hag led United to a third-place finish in his first season at the helm, but has found things tougher this term. His team’s Champions League hopes ended in the group stage after just one win in their six outings, while four defeats from the first seven league games represented their worst start of the Premier League era. When Ratcliffe’s 25 percent investment in the cl…