Arsenal face a decision over whether to bid £60m for Pierre-Emerick Aubameyang.
Borussia Dortmund took the unusual step of going public in a bid to persuade Arsenal to improve their offer.
“We are prepared to implement a transfer under certain parameters, and only if these parameters are fully met,” sporting director Michael Zorc said on Saturday.
“Arsenal have made several attempts so far to sign Aubameyang and they have all been rejected.
“Either our demands are fulfilled, then there can be another transfer, or they will not be fulfilled and Aubameyang will play in Dortmund until the summer.”
Arsenal are thought to have bid £44m and £50m for the striker, but Dortmund want at least £50m.
Zorc going public is a calculated move, because he knows full well that Arsenal supporters will put huge pressure on the club to complete the move and thus avoids Dortmund receiving any blame from Aubameyang if a deal isn’t done.
Having apparently bid £90m for Thomas Lemar in August, Arsenal clearly have the money to sign the striker. Having admitted their interest in the striker already in this window, all cards are now on the table.
That leaves Arsenal with two options: 1) Pay more for Aubameyang than they believe he is worth, or 2) Pull out of the deal and risk the wrath of supporters who will not see Alexis Sanchez leaving and Henrikh Mkhitaryan arriving as a successful window.