Kepa Arrizabalaga is now Chelsea's third-choice goalkeeper due to his inability to remove errors from his game, claims Tony Cascarino.
The £72million stopper was signed from Athletic Bilbao two years ago and was intended to become the club's long-term No 1.
Initially it looked as though Chelsea had replaced former keeper Thibaut Courtois with someone of similar standing, although there have always been questions asked about the Spain international's ability and character.
Blues boss Frank Lampard dropped Kepa at times last season and signed Rennes goalkeeper Edouard Mendy in the summer to remedy the situation.