Charlton Athletic have confirmed that Mason Burstow has completed a move to Premier League giants Chelsea.
The Blues secured Burstow's services by placing a 'substantial bid' for the 18-year-old - who has played 14 games for Charlton since scoring on his debut against Crawley Town.
However, Charlton Athletic have confirmed that Burstow will return to the Addicks on loan for the remainder of the 2021-2022 campaign.
Burstow has netted six times in 14 appearances in all competitions for Charlton. As a result, he attracted interest from a number of clubs, including Chelsea and Brentford.
Burstow - who was left out of Charlton's squad for Monday's game against Portsmouth due to ongoing negotiations - has decided to side with the Blues.
Speaking to CharltonTV after Monday's win at Portsmouth, manager Johnnie Jackson said: 'He is someone that we love here. I'm really fond of him and love his attitude, it has been great to see him develop.
'We're enjoying helping him develop and giving him the opportunities he's had so far. It is great the club has got a deal the chairman is happy with and that we are getting him back on loan.'
Charlton Owner Thomas Sandgaard added: 'We've had a lot of interest in Mason but we only were going to let him go if it was an excellent deal for the club.
'Chelsea have matched our valuation and, as part of the deal, he will come back to us on loan which was important for us.'