Jetro Willems has made a big impact at Newcastle, and despite a previous report claiming a £6 million fee was in the offing, sources in Germany suggest a higher price is in place.
Sports outlet Bild reported over the weekend that a move in the region of €11m (£9.6m) has been agreed by Newcastle and Eintracht Frankfurt, should the loan deal be made permanent.
But this new figure should not dissuade Newcastle from making the Dutch left-back a fully-fledged Newcastle player as soon as possible.
That opinion does not change if the fee is around £3.5m-£4m more.
Newcastle negotiate good fees for loaned players
Newcastle are making a good habit of arranging a good permanent deals for loaned players, with Martin Dubravka being signed for just £4m during his superb loan spell on Tyneside.
Mikel Merino, although the player ultimately returned to Spain, also signed for a relatively minimal fee after his successful loan period.
There will not be many Newcastle fans disappointed if Willems was to become the latest addition to that list of bargain signings.
He has certainly looked the part, continues to improve with every game, and could be set for a long run in the side, even when Matt Ritchie returns to full fitness, such has been the level of his performances.
As we previously suggested, Newcastle should be looking to get the deal made long-term immediately, as they do not need to wait until the transfer window opens to do so.