Blow for Man Utd! European giant seeks to drive up €75m asking price with summer spotlight amid Man City and Bayern Munich links

According to A Bola, via Sport Witness, United, Manchester City, and Bayern Munich are keeping tabs on Porto keeper Diogo Costa. The Portugal stopper has a €75m (£63m) release clause and could potentially be on the move this summer, despite having just over two years left on his contract.

The report adds that Costa will be in the spotlight this summer as he is very likely to be in goal for Portugal in the final four of the Nations League and will be with Porto in the United States for the Club World Cup. United are said to have doubts about first-choice stopper Andre Onana, the same could be said for City and Ederson, and Bayern need a long-term successor for Manuel Neuer. If the 25-year-old can impress in the coming weeks, perhaps that €75m price tag may creep up.

Costa's Portugal take on Germany in their Nations League semi-final on June 4, with the victor lining up against Spain or France four days later.

Costa's Porto round off their league season against Nacional on Saturday, before taking on Palmeiras, Inter Miami, and Al-Ahly in the group stages of the Club World Cup in June.