Premier League clubs have been alerted to the availability of Porto striker Vincent Aboubakar.
The 28 year-old Cameroon international has been transfer-listed by Porto, reports Correio da Manha.
Aboubakar has attracted interest from West Ham United, which are said to already be in contact with Porto about a price.
The striker has been with Porto since 2014, though recently his progress has been hit by a rash of injuries.
Earlier this season, Aboubakar declared: "Yes, I'm going to leave. I'm not going to stay all my life at FC Porto."