Jose Mourinho
Mourinho is under pressure to improve the amount of academy players graduating into the Chelsea first team. Getty Images

Chelsea have confirmed the signing of Swedish youngster Joseph Colley as one of 14 new additions to the club's academy.

Brommapojkarna coach Dali Savic claimed Colley was set to join the Premier League champions in June, but his inclusion within the latest raft of academy signings sees his move confirmed.

The 16 year old is a defensive midfielder and, despite only being at Chelsea for matter of weeks, has been given an academy contract alongside players who were operating in the club's youth teams last season.

Nathaniel Chalobah's brother Trevoh and Cole Dasilva, who was one of three siblings to arrive from Luton Town in 2012, are among the other notable inclusions.

After impressing in the Under-18 side last season, Richard Nartey, Nathan Baxter, Mason Mount, Jared Thompson and Ike Ugbo have all won academy deals.

Josh Grant and Malakai Hinckson-Mars have been rewarded for their form in the Under-16 team, while Daniel Kemp, Jacob Maddox, Luke McCormick and Harvey St Clair are the others to earn contracts.

The latest group of academy promotions will only intensify pressure on manager Jose Mourinho to bring through players from the Chelsea youth ranks.

Chelsea have appeared in each of the last four FA Youth Cup finals, winning three of them, including the 2015 tournament where they beat Manchester City in the final.

In the UEFA Youth League, the Blues claimed the title with a 3-2 win over Shahktar Donetsk to emphasise the deluge of options available to Mourinho.

Ruben Loftus-Cheek was handed his first Chelsea league appearances in the final two matches of the season, with Isaiah Brown featuring in the last match against West Bromwich Albion.

But speaking in December 2014, Mourinho said if he was unable to bring players through into the first team the club should close their academy.

"If you don't bring kids through the academy, the best thing is to close the academy," he said to the Daily Telegraph. "If the kids are not good enough or the work not good enough and you don't bring kids up, then close the door and use the money to buy players.

"You need to prove the academy works well and is worth it. It's only possible if the first-team manager stays for a long time, which in this club, in the last 10 years, was not possible."