De Goey joined Chelsea in June 1997 from Feyenoord for £2,250,000. He was first choice goalkeeper for most of his time in West London, and was a member of the sides that won the League Cup, the Cup Winners' Cup (both in 1998) and the FA Cup in 2000. In 1999-00 he set club records for most appearances (59) and clean sheets (27) during a season, both since surpassed by Frank Lampard and Petr Čech respectively. De Goey later lost his place in the side to Italian Carlo Cudicini and made just 25 appearances in his final three seasons. He was released by Chelsea in May 2003.