Real Madrid boss Jose Mourinho insists on-loan midfielder Nuri Sahin will cost Liverpool heavily if the Reds want to make his deal a permanent one.
Sahin made just four appearances at his time in Madrid before Liverpool signed the Turkey international on a season-long loan. However, Mourinho maintains Sahin will not move to Anfield cheaply.
"Sahin? He is still at Real, he is on loan to Liverpool, and we did not spend a euro for him. He is young and is evolving in a championship that will help him to grow. And, if we want to sell tomorrow, we sell very well," Mourinho told France Football.
Mourinho says all players should be sold for a profit, including Sahin, who moved from Borussia Dortmund for £7.8 million in 2011 He cited Didier Drogba as another example, describing the striker as "the greatest player in the history of Chelsea".
"Everyone makes mistakes [in recruitment]. Look at the greatest player in the history of Chelsea, Drogba, it was me who signed him. In England, no one knew who he was.
"Another example, Tiago. It was not a great move for Chelsea, but sold him for more than we bought him for from Benfica. Do not forget the economic aspect is important.
"You can have sporting success and a good shot economically. And sometimes we are wrong about everything. It happens."