The Portugal international joined ASM on a six month loan in January.
He told L'Equipe: "The presence of (Leonardo) Jardim is very important to me, he weighed a lot in my decision.
"I met him at Sporting CP when I started. Knowing well the coach, who is Portuguese in addition, helps me a lot in the adaptation. I also find players with whom I evolved, that's why everything happens quickly for me here."