Manchester United and Real Madrid will reportedly battle for the services of Porto defender Eder Militao.
United are desperate for defensive reinforcements as they continue to struggle to keep clean sheets, while Madrid's back four has also been far from secure this season.
According to Don Balon, both of the European giants are considering a move for Militao, who has made 19 appearances in all competitions for Porto during the 2018-19 campaign.
The 20-year-old is believed to have a £45m release clause inserted into his current deal with Porto, which United are said to be prepared to meet.
Militao, who started his professional career with Sao Paulo before moving to Porto in August 2018, is also a full Brazil international having made his international debut last year.