Porto attacker Fabio Vieira has reportedly emerged as a transfer target for Manchester United.

The Red Devils are likely to strengthen their attacking lineup this summer.

According to Record via Sportwitness, Ralf Rangnick’s side have a keen interest in Vieira and were closely monitoring him earlier this week.

The Portuguese scored a brace in the 3-0 win over Santa Clara. He has now contributed seven goals and 13 assists from 33 appearances this season.

The 21-year-old midfielder has a release clause worth €50m, and the Mancunian giants may need to pay something close to that figure.

Aside from United, Liverpool are also keeping tabs on the youngster.