1. FC Union Berlin have bolstered their midfield options for the new Bundesliga season with the signing of Sebastian Griesbeck.

The 29-year-old will move on a free transfer to Köpenick from 1. FC Heidenheim who lost this week's Bundesliga Relegation play-off against Werder Bremen. Griesbeck has been at the Voith-Arena under Frank Schmidt's management since 2013 and has made 240 appearances for the club. Griesbeck, who stands at 1.89m in height, is a powerful central midfielder who will compete for a place in the side against Christian Gentner, Grischa Prömel and former team-mate at Heidenheim, Robert Andrich.

"Bundesliga with Union – this is a challenge I'm looking forward to. I've already met Union as an opponent and, especially during matches at the Alte Försterei, I've experienced what makes this club so special. Union have developed enormously in recent years and has had a strong first season in the Bundesliga. Now I want to contribute to being successful in the first division in the new season," said Sebastian Griesbeck.

"We've had Sebastian Griesbeck in our sights for some time now and are convinced that he can strengthen our squad. He is robust, aerially strong and has enormous experience. His qualities will help us in the Bundesliga, so we are pleased that we're able to get him on board," added Oliver Ruhnert, Director for Professional Football at 1. FC Union Berlin.

Griesbeck's contract at the Stadion An der Alten Försterei is valid for both Bundesliga and 2.Bundesliga competition.