Germany defender Marcell Jansen has quit defending Bundesliga champions Bayern Munich and signed a five-year contract with rivals Hamburg for an undisclosed fee.
With the summer transfer window set to close on 1 September, the 22-year-old left-back, who has won 28 caps and played in the UEFA EURO 2008 final defeat against Spain, will undergo a medical before Thursday's official unveiling in Hamburg.
Jansen signed for Munich last summer from his boyhood club Borussia Monchengladbach, making 17 Bundesliga, 10 UEFA Cup and three German Cup appearances for Bayern last season. His progress was hampered by a three-month lay-off with a serious ankle injury before Christmas.
A series of minor injuries meant he struggled during pre-season this summer, although he made coach Jurgen Klinsmann's matchday squad for the first two Bundesliga games without coming off the bench. Jansen revealed he had been courted by Hamburg for over a year and was looking forward to the new challenge.
"I am really pleased with the move and looking forward to the challenge in a new city," he said on the Hamburg website. "The first contact I had with Hamburg was a long time ago. The club's executive committee have always dealt with me with great honesty and respect, which gave me a good feeling."
He is Hamburg's third new signing this summer after Croatia striker Mladen Petric joined from Dortmund and Brazil central defender Alex Silva switched from Sao Paulo.