
At the same time, the Werkself have loaned out Panagiotis Retsos to the Premier League club Sheffield United to the end of the season. The versatile defender Retsos has a contract at Bayer 04 to 30 June 2022.
"Edmond Tapsoba was a regular first choice at Guimaraes at the age of 20 and in addition to his defensive ability, he’s also dangerous in front of goal," said Bayer 04 sporting director Simon Rolfes in commenting on the signing of the 1.92 metre tall defender. Tapsoba has made 32 appearances for the Portuguese side this season, scoring eight goals including three in the Europa League. And sporting managing director Rudi Völler added: "His really big potential makes Edmond Tapsoba a very interesting proposition as a player. We are happy we've been able to complete this transfer."
The signing of Tapsoba enabled Retsos to go out on loan: "Panos has lost a whole year through injuries and it's important for him to play now. The Premier League club Sheffield United offer the highest level for him to get back to top form," said Völler.

The Bayer 04 Round of 16 tie in the 2026/27 DFB Pokal has been scheduled. The Werkself will host Bundesliga rivals RB Leipzig on Wednesday, 2 December, at 18:00 CET. That was announced by the German Football Association (DFB).
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Video game developer Electronic Arts (EA), in collaboration with the Bundesliga, has announced the six nominees for the Bundesliga Player of the Month award for October 2026 – and Bayer 04’s Ibrahim Maza is among them. Fans of the Black and Reds can vote from now until Sunday 8 November (23:59 CET).
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On Tuesday night, the Leverkusen e-sports team played the first three of their six group stage matches in the second round of the 2026/27 VBL Club Championship. They were unable to secure more than a draw in either of their matches against FC Augsburg and VfB Stuttgart. The match against Bayern Munich ended in defeat.
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Once again, several Werkself players are set to represent their respective national teams during the final international break of the calendar year. Here is an overview of the Leverkusen players called up for international duty and the match dates. This will be updated regularly.
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