10 Best Players Sold By Borussia Dortmund

10. Jens Lehmann

The ex-Germany star actually had his breakthrough with Dortmund's Ruhr-derby rivals FC Schalke, where he started his professional career and played for 10 years.

After a short detour in Serie A with AC Milan, he returned to the Bundesliga to join Borussia Dortmund in 1998 to replace longtime 'keeper Stefan Klos, but struggled with poor performances in his maiden year.

He was rumored to leave and the fans were absolutely livid about it, but Lehmann soon turned the tables around in the next season with improved performances and quickly established himself as the no.1 choice in goal.

In the 2002/03 season, his form dropped once again along with that of the whole team and he joined Arsenal at the end of the campaign after capping 179 appearances for the Borussen and winning one league title.