Belgian giants Anderlecht are demanding $4m from Marseille before they allow their Ghanaian winger Frank Acheampong to join the French side before the transfer window shuts next week.
Acheampong is a top target for Marseille who have sold most of their top players to European clubs this summer.
Several teams have discovered the potential of the Ghanaian since Marseille made clear their decision to seek to sign the player.
However, Marseille's new head coach has not taken away their interest and they have been told they have to pay $4m for the Ghana star.
Acheampong is not playing as often as he likes this season at Anderlecht and he is requesting a transfer to boost his chances of playing regularly.