Borussia Dortmund goalkeeper Roman Weidenfeller can see Ilkay Gundogan leaving in the summer.
Manchester United and Real Madrid are chasing the Germany international, who is delaying new contract talks.
"I would hope that he continues to remain a part of Borussia Dortmund. Here he can develop, where he is part of a big family. He has great qualities and hopefully he realizes that he can still make the next step in two or three years.
"We have the best opportunities, but each player has to decide for his future."