The transfer is reported to involve an upfront £25m payment, with an additional sell-on clause included.
Chelsea’s co-sporting directors Paul Winstanley and Laurence Stewart told the club website: “We’re very pleased to welcome Robert to Chelsea and he adds further quality to our goalkeeping unit.
“Robert has repeatedly proved himself in the Premier League and been capped by his country. We are excited to watch him work with (head coach) Mauricio (Pochettino) and his coaching team during the season ahead.”
We are committed to Safer Gambling and have a number of self-help tools to help you manage your gambling. We also work with a number of independent charitable organisations who can offer help and answers any questions you may have.
