The 28-year-old impressed with his performances in Ligue 1 last season, catching the eye of the Spanish champions.
"He felt the same as their technical staff, that he's a very good player whom they all appreciate.
"He told me that a number of offensive players would leave Barca [this summer]. But Mathieu is currently at Marseille and feels happy there."
Earlier this summer, Valbuena himself refused to rule out a Marseille exit.