Borussia and Chelsea agreed to lease Misha Batshuayi, according to the BBC.
Previously, Dortmunders sold their top scorer Pierre-Emerick Obama to the Arsenal for about 60 million pounds.
Since the Gunners have Obameyang, they will now be able to release Olivier Giroud to Chelsea, which was a prerequisite for Chelsea to agree to let Batshuyi lease.
The Blues also negotiated with Tottenham on the exchange of Batshuayi-Llorente, but Misha refused to go over to the "spurs" because he wanted to be the main.
His next match, Borussia will hold on February 2 against Cologne in the German championship.