Manchester United are looking to Portugal this summer with one key warning in mind, top targets will not come cheap. For the last decade Benfica have been a selling club, and three Manchester United players have arrived from there, via different routes. United paid £31 million to sign Victor Lindelof in 2017. Nemanja Matic came the same summer, after Benfica sold him to Chelsea for £21 million. Years earlier in 2010 they sold Angel di Maria to Real Madrid for the same price. It was in 2019 when the market exploded. They sold Joao Felix to Atletico Madrid for £109 million, and have been both fi…