West Ham United are leading the race for Porto striker Vincent Aboubakar.
Besiktas have also been linked with the centre-forward, however Marca says West Ham are now in advanced talks with Porto over a fee.
A deal worth around €7m is being mooted for Aboubakar, with Porto happy to sell.
The Cameroon international has been with Porto for six years, though did have a season on-loan with Besiktas for 2016/17.
The 28 year-old has just over a year to run on his current deal.