Arsenal have made an official bid to sign Pierre-Emerick Aubameyang, Borussia Dortmund chief executive Hans-Joachim Watzke has confirmed.
After sitting out last weekend's stalemate against Wolfsburg for disciplinary reasons, Aubameyang did not travel with Dortmund for Friday's 1-1 draw at Hertha Berlin.
The striker has been linked with Arsenal as a replacement for Alexis Sanchez, who appears set to join Manchester United in a deal that could see Henrikh Mkhitaryan move the other way.
And Arsenal have now stepped up their interest, with an offer for Aubameyang reported to be worth EUR50million.
"I can confirm that there has been a first request from Arsenal for Pierre-Emerick Aubameyang and we are not commenting on the sums that have been mentioned," Watzke was quoted as saying by Ruhr Nachrichten.