The Welsh winger has been nursing a thigh injury over the past two weeks and has made only three appearances for the Spanish giants.
"Gareth's well integrated at the club and everyone has received him very well," the Frenchman told Sport360.
"He was lacking a bit of physical preparation when he arrived so it has been a bit delicate in the beginning with his physical state.
"The only thing that is lacking with his condition is that he hasn't trained enough with the rest of the team."
Madrid reportedly paid Tottenham a world-record fee of £85m to sign Bale.