The 38-year-old was released by Huddersfield at the end of last season and jumped on the opportunity to relocate to Stamford Bridge.
It's been a crazy day but I'm incredibly excited to have joined one of the biggest football clubs in the world @ChelseaFC . Having this opportunity at this stage of my career is something really special, and I can not wait to get started now. Thank you all for the support
– Robert Green (@ Robert1Green) July 26, 2018
Green should not be in the Premier League this season since he will start in third behind Thibaut Courtois and Willy Caballero
Green told Chelsea's official website: "It was a whirlwind 24 hours a day." You think about your career and where you want to go and you get a phone call like this, and it's a short conversation Rob Green made a surprise move to Chelsea (Mike Egerton / PA)