Former Real Madrid striker Antonio Cassano has slammed Barcelona for letting Luis Suarez depart for Atletico Madrid.

Upon his appointment as Barcelona coach, Ronald Koeman told Suarez that he as no longer needed at the club, while he was also left off the list of players deemed unsellable by ex-president Josep Maria Bartomeu.

"They said Suarez was old when he left Barcelona," Cassano told Christian Vieri on Instagram. "Another moment of madness.

"He scored 350 goals in six years. I don't understand why they kicked him out [the club]. Then they put [Antoine] Greizmann as a centre forward."