Sahin left Dortmund for the Spanish giants in the summer, but has failed to make the expected impact in Madrid.
“If I may give Nuri this advice, he should not get the idea to leave Real Madrid after half a year,” Dortmund captain Kehl told Kicker.
“If Nuri is used in all competitions in the second half of the season, this question (whether he can impose himself) will no longer be asked.”
