Manchester United are interested in a move for Joao Neves, and there are a few key figures to be aware of. Clubs looking to deal with Benfica over the past few years have discovered it is very expensive business. Here is a look through their record sales. Benfica record salesJoao Felix: £113m to Atletico MadridEnzo Fernandez: £105m to ChelseaDarwin Nunez: £85m to LiverpoolBenfica are able to achieve high value sales for varying reasons, but one is the high release clauses they set in their players’ contracts, which sets a high bar for negotiations – and in many cases, they insist the only way …