He says that this is the second time he will be leaving Didier lacoste and He says he is leaving because he wants to evolve as a singer in his own solo career. he says that he he will be doing a 3 song maxi-song which features Fabregas and Djino.
@18:00 is where you can here him sing

Lacoste is spending toooooo much time  in europe,and is not organized as well as the guys he want to compete with  so they struggle a lot and have no other choice than leaving  with support of friends especially now that there are loads of songwriters to give those guys songs