Bayer Leverkusen and Chelsea have reached agreement on a deal for the transfer of Andre Schurrle to Stamford Bridge.
The Bundesliga club gave the move the green light following their capture of South Korea international Heung-Min Son from Hamburg.
A Leverkusen statement said Son, 20, had put pen to paper on a five-year deal, and chief executive Wolfgang Holzhauser explained: “From the very beginning, we have made clear to everyone that Andre Schurrle’s switch to Chelsea was only viable in connection with an adequate alternative.
“With Heung-Min Son, we have now secured that alternative. Therefore, nothing stands in the way of Andre Schurrle’s transfer to England.”
Leverkusen said the transfer would go through if Germany international midfielder Schurrle passed a medical, with football magazine kicker reporting that the Blues would pay €23 million for the 22-year-old.
A Chelsea statement said: “Chelsea Football Club and Bayer 04 Leverkusen have reached an agreement for the transfer of Andre Schürrle, subject to the completion of legal documentation and related matters including personal terms and passing a medical.”
Schurrle has scored seven goals in 24 senior appearances for Germany, and hit 11 Bundesliga goals as Leverkusen finished third last season.
Leverkusen said they were delighted to have secured the signature of Son, with Holzhauser adding: “In Heung-Min Son, we have signed a player who, despite his youth, has been a key player at Hamburg.
“Son perfectly fits our profile as a young professional with a lot of potential and international claims.”
General manager Rudi Voller added: “Heung-Min Son is exactly the type of player we have been looking to add. He is fast, agile, technically strong and is dangerous in front of goal."