Crystal Palace boss Alan Pardew says Yannick Bolasie's value is soaring thanks to the winger's outstanding form.
Bolasie, 25, scored a hat-trick in Palace's 4-1 win at Sunderland last Saturday and the DR Congo international is reportedly a £10m transfer target for rival clubs.
Pardew said: "They need to have a look at that, because he is worth double."
Bolasie has helped Palace win four of their last five Premier League games.
Under Pardew, Palace have lost just three league games and have risen to 11th place in the table.
Saturday's game at home to West Bromwich Albion (which kicks off 15:00 BST) will see former Palace boss Tony Pulis return to Selhurst Park for the first time following his departure last August.
And Pardew, who took charge in early January after leaving Newcastle, added: "We're in a terrific mood, in terms of confidence. We have great momentum.
"We're more expansive now, we have a great attacking set-up. I think we're exciting to watch and we have new goals to break into the top 10."