It was reported that Newcastle United had a second bid for the Holland international turned down at the weekend with an offer from German side Borussia Monchengladbach rumoured to be imminent.
De Jong has said he wants to leave the Eredivisie side but McClaren is playing hardball placing a £15 million price tag on his head and insisting he doesn’t have to offload his star players after selling Ola John to Benfica to balance the books.
McClaren told Sky Sports News: “We do not have to sell and, football being football, everybody has his price. For Luuk de Jong to leave this club then it will have to be a very good offer, one that we cannot refuse, and at the moment no-one has given us that yet.
“There are more than just rumours. There is obvious interest as everyone knows.
“Of course we want to keep Luke de Jong and we want to keep our squad of players as it is. We want to build and not to take players away.
“We have already sold Ola John and I have told the club I do not want to sell any more.”
“Any club taking him now would not be getting the best of him. They will be getting the best of him in a year’s time – if they can afford to do that.”