Swansea City’s American owners insist they will not be “bullied” into selling Gylfi Sigurdsson.
Swansea have turned down a £40m offer from Everton for the 27-year-old, who has not to travelled on the club’s pre-season tour of the United States.
Swansea value Sigurdsson at £50m and, in a statement, club owners Steve Kaplan and Jason Levien said: “At this time we have not received an offer from any club which represents a fair valuation of Gylfi given his importance to our club.
“We will not be bullied or forced into a decision until a club meets our valuation of the player, no matter whether they believe they have an agreement with the player.
“Any such agreement would obviously be in contravention of Premier League legislation.”
Manager Paul Clement has said the “business side to football” meant the club might have to sell him.
“I’ve made it very clear I want him to stay here,” he added.
“He’s one of our most valuable players. He showed that last season with his goals and his assists, and he was instrumental in us maintaining our Premier League status.”