Premier League interest in Porto striker Andre Silva is intensifying.
A Bola says Liverpool, Arsenal and both Manchester clubs sent scouts to watch Silva in action during Porto's 1-0 win over Braga on Saturday.
They are said to have been joined in the crowd by Newcastle and Southampton, as well as numerous teams from across Europe.
Silva is tied to Porto until the summer of 2021.
The highly-rated hitman has come through the youth ranks at Estadio do Dragao to emerge as a key player for the 2004 Champions League winners.