Rio Ferdinand says it was crazy for Chelsea to sell Mario Pasalic to Atalanta.

The Croatian spent six years at Chelsea but did not manage one first-team appearance.

He has scored 15 goals in 75 appearances for Atalanta, including the opening goal in Wednesday's loss to PSG in the Champions League quarter-finals.

Speaking on BT Sport during the game, Ferdinand could not believe Chelsea had sold the 25-year-old for 13m.

"Crazy, It's crazy!" Ferdinand exclaimed.

"He was a Chelsea player for six years! They've just sold him for £12m."