John Swift
John Swift made his Chelsea first-team debut in the 2013-14 campaignGetty.

Chelsea have extended the loan agreement of John Swift to Brentford until 3 January 2016 following a successful month at Griffin Park. Manager Lee Carsley has expressed his delighted over the deal after claiming the 20-year-old midfielder "has been outstanding" since the Blues let him move to the Championship side on an initial one-month loan deal up to 31 October.

The Blues academy star has been present in all four games for the Bees in October, starting with a late cameo in the 2-0 defeat against Derby County and playing a starting role in the consecutive victories over Rotherham, Wolverhampton Wanderers and Charlton Athletic, providing an assist against Wolves while scoring in the 3-0 victory over the Addicks.

"John Swift's loan to Championship club Brentford will continue into 2016 following an initial one month at Griffin Park," the Blues confirmed through an official statement.

Carsley, meanwhile, has urged the youngster to continue his impressive form and not "rest on his laurels" in order to maintain his spot as a regular player in his line-ups.

"We are delighted that Chelsea have allowed John to stay with us until January. He has been a very good addition to the squad. He has slotted in well to the group," the manager said to the club's website. "We spoke to him about pushing on and standing out with the quality he has. It is important he doesn't rest on his laurels. His work rate has been outstanding since he has been with us and if he wants to stay in the team he has to maintain that."

Swift made his first-team debut under Chelsea manager Jose Mourinho on the final day of the 2013-14 season in a 2-1 victory at Cardiff after helping being the Under-21 side win the league in that campaign. In the 2014-15 season, he had two different loan spells at Rotherham United and Swindon Town and despite starting the current campaign with the Under-21 side, Mourinho opted to send him to the Bees in October to continue his progress in the Championship side.