Francis Ngannou's former trainer Fernand Lopez has admitted regret over the breakdown of his relationship with the UFC champion ahead of their reunion at UFC 270.
The Cameroon star will take on French star Cyril Gane who is trained by Ngannou's former coach Lopez at the 'MMA Factory' gym in Paris.
Lopez guided Ngannou through his early rise in the UFC before the pair split and have publicly feuded ever since the announcement of the title clash.