Chelsea goalkeeper Jamal Blackman has extended his contract at the club and will now spend the 2017-18 campaign on loan at Sheffield United.

The 23-year-old academy graduate has signed an extension to his Chelsea deal until 2021, but has been allowed to leave following the arrival of Willy Caballero this summer - with the Blues keen to see Blackman play regular first-team football in the Championship.

A statement on Chelsea's website on Thursday read: "Goalkeeper Jamal Blackman has extended his Chelsea contract until 2021 and will be spending the coming season on loan at Sheffield United.

"Our signing of Willy Caballero increased our number of experienced first-team goalkeepers to three, allowing Blackman the opportunity to further his experience in the Championship.

"The tall 23-year-old enjoyed an especially good year on loan last season at Wycombe Wanderers, for whom he appeared 52 times and was named their Young Player of the Year, and now he has the chance to develop his game at a higher level.

"Blackman lifted the FA Youth Cup and the Under-21 Premier League trophies with our Academy sides."