Bayer Leverkusen have announced the signing of Freiburg centre-back Omer Toprak.
The announcement comes just over a month after Freiburg sporting director Dirk Dufner confirmed that the two clubs had reached an agreement over the player's transfer.
Corresponding with the retirement of veteran Sami Hyypia, Leverkusen revealed on their official website that the 21-year old Toprak will be the Finn's replacement when he puts pen to paper on a five-year contract.
"Omer Toprak is a highly talented German central defender, who fits extremely well within the structure of our team," Leverkusen sporting director Rudi Voller said.
"In him, we have gained a very high-level player, but his development is far from complete."
Toprak's move to the BayArena will coincide with that of coach Robin Dutt, who in March announced that he would leave Freiburg for Leverkusen.
Toprak has made 68 appearances for Freiburg since his debut in 2008. He was part of the German U-19 squad that won the 2008 European Championship, and has since featured as part of the U-21 set-up.