Tottenham could one-up Man United with a money-spinning commercial move worth £150m-plus. Man United are currently undergoing a makeover under the part-ownership of Sir Jim Ratcliffe, who bought a 27 per cent stake in the club for £1.2bn in February. As well as freshening up the squad with additions like Leny Yoro, Ratcliffe is trying to find efficiencies behind the scenes and ensure that the club is living up to its earning potential. Some of the measures he have taken have proven hugely controversial, such as the decision to make 250 United staff redundant earlier this summer. However, one l…