Chelsea have added another promising player to their books, continuing BlueCo's policy of signing world football's most exciting young talents.

Enzo Maresca already has a squad filled with youth, so much so, that there is a real case to be made for the club to prioritise more experience.

Most recently, Chelsea agreed a deal with Ajax worth over £35 million for teenage starlet Jorrel Hato, who joins Liam Delap (22), Jamie Gittens (20) and Joao Pedro (23) as their latest incomings of the window.

Despite his age, Hato already boasts over a century of senior appearances from his time at Ajax, including some noteworthy Europa League performances.

Hato underwent his medical yesterday, according to Fabrizio Romano, with Chelsea adding yet another starlet to their ranks ahead of the new season.

Todd Boehly and the board haven't been shy when it comes to splashing the cash on these prestigious talents, having spent nearly £270 million this window alone, and Chelsea are yet to make any signings over the age of 23 in the build up to deadline day.

Chelsea also fielded the youngest ever starting eleven in Premier League history last year (OptaJoe), and amid their talks for RB Leipzig starlet Xavi Simons, not to mention an expected bid for Alejandro Garnacho, their average age isn't likely to go up any time soon.

Chelsea confirm signing of Jesse Derry from Crystal Palace

The club are very much still prioritising players with huge sell-on value and potential, with Chelsea recently agreeing a deal for young Crystal Palace attacker Jesse Derry too.

The 18-year-old "sensation" was on the verge of a move to Germany, before Maresca's side hijacked the transfer to keep him in London. Derry was a man in-demand, attracting interest from eight European clubs, but it was Chelsea who ultimately won the race for his signature (Fabrizio Romano).

Now, almost a week later, Chelsea have confirmed Derry's arrival, with the Englishman putting pen to paper on a four-year contract at Stamford Bridge.

The teenage forward represented England at this summer's Under-19 European championships, coming after he racked up 20 goals and five assists in just 27 outings for Palace's Under-18s during his time at Selhurst Park.

Derry made the step up to Under-21s football at Palace last season too, but he'll now attempt to battle his way into Maresca's set up over the coming years.