The last time Chelsea allowed their youth players to play against them

Derby County v Ipswich Town - Sky Bet Championship

Developing young talent hasn't really been Chelsea's forte over the past decade.

But they deserve huge praise after announcing on Monday they will allow Derby County to select Mason Mount and Fikayo Tomori for next week's fixture in the Carabao Cup fourth round.

Mount, 19, and Tomori, 20, are currently on season-long loans with the Rams under Frank Lampard and progressing nicely.

Chelsea will be well aware of the risks of letting them both play, but it shows the Blues genuinely do care about youth.

A statement read: "Chelsea Football Club has today granted Derby County permission to select loanees Mason Mount and Fikayo Tomori for next week's Carabao Cup fourth-round fixture.

"Unlike in the Premier League, EFL Cup rules allow for clubs in the competition to make such agreements for players to appear against their parent clubs.

"After beating Manchester United at Old Trafford in the previous round, we believe the experience of facing top-level opposition once more will be of benefit to their on-going development at Derby."

Chelsea will just hope their decision doesn't come back to bite them - like it did in 2014.

Millwall v Derby County - Sky Bet Championship

Four years ago the Blues faced a similar dilemma when they drew Atletico Madrid in the Champions League semi-finals. Thibaut Courtois, 21, was on loan at the Rojiblancos at the time.

Chelsea chief executive Ron Gourlay said of the predicament: "Regarding the UEFA statement (about Courtois' eligibility), we'll evaluate it over the next 24 to 48 hours.

"As far as we're concerned we complied with loan rules. He can play against Chelsea - if selected."

Courtois ended up being granted permission to play against Chelsea and it's a decision that must haunt the club to this day.

Chelsea v Club Atletico de Madrid - UEFA Champions League Semi Final

Atletico sealed a 0-0 draw at the Vicente Calderon in the first leg and Courtois had an unbelievable game in goal.

And the Belgian had another stormer in the second leg as Atletico walked away from Stamford Bridge with a 3-1 victory and a place in the Champions League final.

Awkward. Courtois returned to Chelsea under Jose Mourinho that summer and helped guide them to the 2014/15 Premier League title, so it wasn't all bad.

But the defeat to Atletico showed that these kinds of decisions can backfire spectacularly. History could well repeat itself next week against Derby.

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