PSV Eindhoven are angered by the silence from Ola Toivonen's camp.
The Sweden striker, inside the final year of his current deal, is being linked with Newcastle United.
PSV approached Toivonen three weeks about opening new contract talks, but the player's representatives are yet to respond - much to the frustration of management.
The striker, who turned down a move to Norwich City last summer, is free to commit to a pre-contract with any foreign club from January 1.
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