The German club will not negotiate for less than 10 million euros.
The Austrian defender has showed some good form for the German cub this season and Mauricio Pochettino is reportedly very confident of agreeing a £5 million fee for the player to arrive in the summer.
A report in Germany this morning also spoke about Tottenham;s interest in Wimmer. The central defender, who can also play at left back, was the topic of discussion in an article in Kolner Stadt-Anzeiger.
However this report would suggest that £5 million would not be enough for the player to leave Koln.
The German paper states that Koln will not consider doing any business for less than €10 million. At the moment, that equates to around £7.2 million, so Tottenham appear to be a little bit short of where they need to be if they want Wimmer on board for next season.
Spurs are said to be after a new defender, as the form of Younes Kaboul, Vlad Chiriches and Federico Fazio has been far from convincing this season.
However the same report also makes it clear that Wimmer would be likely to move on in the summer. Koln have mounting debts of around €24 million - so selling the player for a handsome slice of that debt would be a big boost for the club.
So Tottenham Hotspur fans should not worry about a £2 million gap in negotiations, the two club's should easily find a way to bridge that gap.