Premier League clubs are chasing Ecuador's World Cup star Enner Valencia.
His Mexican club Pachuca confirmed they had already received bids for the striker.
The Sunday Express says Tottenham, Everton and Newcastle United are all keen.
Pachuca's vice-president Andres Vassi admits: "Enner Valencia's value increases every day. We don't know if he will stay, it will be hard given the offers we have received.
"The options that a great player at this level gets are to be taken into account. But for now he has to keep doing things right.
"No doubt it would hurt us to let Enner Valencia go, but we are realistic about his quality."
