Borussia Dortmund chief Zorc: No 'concrete' Aubameyang offers

Borussia Dortmund left star striker Pierre-Emerick Aubameyang out of their squad for the second Bundesliga match in a row on Friday, with sporting director Michael Zorc revealing the club are still waiting for a "concrete" transfer offer for the Gabon striker.

Aubameyang, who was dropped from the squad for Dortmund's 0-0 draw with Wolfsburg last Sunday, was again omitted from the side that drew 1-1 at Hertha Berlin.

"It's not a suspension but a sporting decision," Zorc told Eurosport.

Dortmund missed the pace of Aubameyang -- who has been linked with a winter transfer to Premier League side Arsenal -- to create goalscoring opportunities against Hertha's well-organised defense. And Zorc admitted the club are still operating as if the attacker is still part of the team.

"We're still planning with Aubameyang," Zorc said. "There is a way back into the team. Professionalism is part of that and also saying in one or two situations that a mistake was made.

"There is nothing really concrete on the table. There's a lot of rubbish."

Aubameyang was originally dropped for missing a club appointment, with manager Peter Stoger saying he felt the player was "not so focused at the moment."