GRAHAM POTTER is being lined up to replace Erik ten Hag at Manchester United, SunSport can exclusively reveal. It’s understood incoming investor Sir Jim Ratcliffe has met with former Chelsea chief Potter and favours him as the new boss at Old Trafford if he fires Ten Hag. The threat to the Dutchman’s position increased following Tuesday’s 1-0 Champions League home defeat to Bayern Munich. Meanwhile, Barcelona have ruled out a swap deal involving…