Borussia Dortmund director of football Michael Zorc has warned Arsenal that Pierre-Emerick Aubameyang will not depart this month unless the Gunners fulfil their demands.
The Gabon international, who had been frozen out of BVB's squad due to disciplinary issues, has been at the centre of talks between the two clubs over the past week.
Dortmund have however included Aubameyang in their latest squad to face Freiburg in the Bundesliga, and Zorc went on to issue Arsenal with an ultimatum regarding their talisman.
"We have our position, just as last summer when Barcelona tried to sign him. We are willing to work on a transfer if certain criteria are met," Zorc told Sky Sports News.
"Arsenal have tried several times but we have refused everything up until now. Either our demands will be fulfilled and there will be a transfer, or they won't be and Auba plays for Dortmund until the summer.
"That's what we told the Aubameyang family and they accepted it."
Aubameyang has 17 goals in 21 Bundesliga and Champions League outings so far this season.