Real Madrid have reportedly been scouting Porto defender Eder Militao in recent weeks.
Militao, who started his professional career with Sao Paulo before moving to Porto in August 2018, has been linked with a number of European clubs in recent weeks.
Manchester United have been credited with an interest in the 20-year-old, although it is believed that Real Madrid hold the edge when it comes to potentially securing the defender's signature.
According to Marca, Real Madrid representatives have been watching Militao in action for Porto in recent weeks and the European champions have been impressed with the centre-back.
Militao, who is believed to have a £45m release clause in his current contract with Porto, is a full Brazil international having made his debut last year.