Fortuna Dusseldorf have signed Cha Du-Ri on a free transfer following his departure from Celtic.
South Korea international Cha, 31, has signed a two-year deal after being released from his Celtic contract at the end of the season.
The Frankfurt-born right back returns to Germany after previous spells with for Arminia Bielefeld, Eintracht Frankfurt, Mainz and Freiburg and he told his new club's website: "I am delighted to be back in the Bundesliga.
"Fortuna are a great club with great fans and I am looking forward to the challenge and the atmosphere in the Dusseldorf Arena."
Fortuna's director of sport, Wolf Werner, added: "He has already proven his potential in the Bundesliga in the past. Cha Du-Ri gives us a versatile and internationally-experienced player for the right-hand side of the field."