FCN believe Frankfurt have not respected FIFA rules on transfers in their alleged pursuit of the player, currently away with the France Olympic squad, having rejected an initial offer of €5m.
In the preceding months, Kolo Muani’s advisers have been leaning more and more towards a move away from Nantes with the club having failed to extend the striker’s current deal which ends next summer.
Kolo Muani had impressed throughout what became a breakout season in 2020/21, playing in a range of roles across the attack for four different coaches as his club struggled against relegation before ultimately winning their relegation play-off against Toulouse.