Chelsea's most valuable academy star is a bit of a surprise.

There are several high profile Blues stars that came from the youth team, including Callum Hudson-Odoi, Mason Mount and Tammy Abraham.

But a recent study indicates that defender Fikayo Tomori is the one with the highest value.

It is from Carteret Analytics, in partnership with The Sun.

The London-based investment company has looked at the way players are valued and made a list that focuses on age, performances, position and other factors.

Tomori is 22 and has a value of £43.3 million, while Abraham's value is £38.2 million.

Mount is at £33 million, while Hudson-Odoi is a little further back with an estimated value of £18.1 million.