By Alan Smith Sir Jim Ratcliffe wants Manchester United to become a title-challenging force again inside three years. The first problem INEOS’ founder, and his assembling team of off-field decision-makers, may find is that step one of their transformation involves finding somewhere to shift the deadwood. At a time when Premier League clubs have become hyper-aware of the now stringently-enforced profit and sustainability rules, there is a wide acceptance that United must sell before they buy at the end of this season. They are not alone in that regard but the problem is finding willing buyers f…