Georginio Wijnaldum has been given a transfer warning by fellow Dutch star Ryan Babel, who has admitted that leaving Liverpool is the "biggest regret" of his career.
Wijnaldum is being heavily linked with a move away from Anfield after entering the final six months of his current contract.
The 30-year-old is free to negotiate with any potential suitors in the winter market having yet to receive an extension offer from the Reds, with Barcelona currently being mooted as his most likely next destination.
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Wijnaldum has played a key role in Liverpool's return to the top under Jurgen Klopp, scoring 20 goals in 209 appearances across all competitions.