The Brazilian says his former club "didn't deal well with the change of manager", with Quique Setien the latest man to step into the Camp Nou hot seat
Barcelona were "naive" and "disrespectful" in how they handled Ernesto Valverde's sacking, according to Rivaldo.
Valverde's three-year reign at Camp Nou came to an end on Monday when the club decided to relieve him of his managerial duties.
The Blaugrana announced ex-Real Betis boss Quique Setien as his successor, on a deal set to run through to 2022.
Editors' Picks
Valverde guided Barca to back-to-back Spanish titles, but a number of high-profile failures in cup competitions ultimately undermined his achievements in La Liga.