Hamburg are set to sign Germany full-back Marcell Jansen on a five-year deal from Bayern Munich.
The two Bundesliga sides have agreed the transfer of the 22-year-old, who will pen a contract tying him to the HSV Arena until 2013.
A statement on Bayern's official website, www.fcbayern.de, read: 'After only a year on Munich Marcell Jansen is leaving the record German champions and transferring to Hamburg, who he will sign a five-year deal until 30 June 2013.
'On Wednesday both clubs agreed a transfer of the 22-year-old left-back. The fee is undisclosed.'
Jansen, who only joined Bayern from Borussia Monchengladbach last summer, will undergo a medical at Hamburg on Thursday.
If he completes that successfully the Germany international will be presented later in the day.
Jansen told Hamburg's official website, www.hsv.de, the the potential of the north German club was a factor in the transfer.
'I am very pleased and have a good feeling. Waiting for me is a new challenge in a new city,' he said.
'I see in this transfer a huge chance of me and am certain that I can continue my development on the pitch in Hamburg.
'Hamburg has a young team which is hungry for success and which has lots of potential. I was able to see that almost two weeks ago in Munich (Bayern and Hamburg drew 2-2 on the opening game of the Bundesliga season).
Jansen revealed he had been considering a move to Hamburg over the summer.
He said: 'The first contact was a long time ago. And the (Hamburg) board was always very serious and honest with me. That pleased me.
'I considered it for a long time this past summer.'
The left-back was a member of the Germany squad which reached the final of Euro 2008, where they lost 1-0 to Spain.
He started Germany's first game of the tournament against Poland, but endured a torrid time in their second - a 2-1 defeat to Croatia - and did not start another match in the competition.
Jansen could make his Hamburg debut away to Arminia Bielefeld on Sunday as Martin Jol's men look to continue their unbeaten start to the season.
He said: 'The coach (Martin Jol) has to decide that. I will probably only be able to train once with the team in the run-up to the game, because I still have to first take a medical on Thursday in Hamburg.
'But I would of course be pleased if I could be there (against Arminia).'
Jansen will become the second defender Jol has signed this week after Brazil international Alex Silva finally completed his move from Sao Paulo.
Hamburg sporting director Dietmar Beiersdorfer and team doctor Oliver Dierk travelled to Brazil earlier this week to sort out details of the transfer.
The 23-year-old has signed a five-year contract at the HSV Arena, although a Hamburg spokesman revealed earlier on Wednesday he will not arrive in Hamburg until after Brazil's World Cup qualifier with Bolivia on September 9.
Spokesman Jorn Wolf said: Alex Silva is getting married today (Wednesday) in Brazil and will, after consultation with coach Martin Jol, come to Hamburg for the first time after the Brazil national team's two internationals against Chile (September 7) and Bolivia (September 9), for which he has been called up.'
Beiersdorfer was delighted to secure the signing of Silva, saying: 'Alex Silva is a great centre back, who is in particularly characterised by his dynamism.
'He is a young player, who already has a lot of experience from the Brasilian first division and the Copa Libertadores. I will give our defence even more stability.'
Hamburg president Bernd Hoffmann claimed the capture of Jansen and Silva gave notice of the club's ambitions.
'With Marcell Jansen, as with the transfer of Alex Silva, we are continuing our policy of signing highly ambitious players with great potential,' he said.