Colkett, 19, captained our Academy to UEFA Youth League success against Paris Saint-Germain on Monday, his second win at that level having also lifted the FA Youth Cup twice.

The England Under-20 international joined the Blues as an Under-11, and was recently called up to a senior matchday squad for the first time when he was an unused sub against Swansea on 9 April.

Colkett said: ‘It’s a very proud day for me and my family to sign again for Chelsea. It’s been great since I’ve been here and hopefully I can continue to kick on and achieve even more.’