Feyenoord midfielder Jordy Clasie admits Morgan Schneiderlin's move to Manchester United could prompt his own transfer to Southampton.
France international Schneiderlin is expected to become Louis van Gaal's latest summer recruit in the coming days, with the Guardian suggesting United are looking to confirm the deal before the squad set off for their pre-season tour of the US on Monday 13 July.
Southampton boss Koeman is content for the move to go ahead, providing United pay the club's full valuation. The Dutchman has also identified Clasie as his first choice to replace the 25-year-old.
"He is a good player, a young player, who is ready to make a step up and show his qualities at a higher level," Koeman said on 6 July.
Clasie has responded by telling Algemeen Dagblad: "I have read Koeman's comments. If Schneilderlin leaves, we will see."
The France international is reportedly valued at £27m by Southampton and while United are yet to meet that valuation, the Saints boss believes it is only a matter of time before they do.
"Every player has his price and we have experience as a club of selling players," Koeman said. "Last season we sold some players, and if there is interest in Morgan then OK. But it has to be at the price the club wants. He is one of the key players of our team, an international player. And I don't think is a problem for Manchester United."
While there is a plan in place to replace Schneiderlin, Southampton have missed out on a man they thought they had secured a deal for in Toby Alderweireld.
The defender enjoyed a successful season on loan on the south coast last season and the club believed they had the option to make the deal permanent for a fee of £6.8m unless Atletico paid £1.5m to cancel the clause.
But Tottenham Hotspur have confirmed the Belgium international has signed a five-year contract at White Hart Lane.