Video: How Chelsea squad left with heads in hands after 22-year-old makes mistake in training
The team were engaging in fun yet competitive game of football tennis, with the likes of Pierre-Emerick Aubameyang, Armando Broja and Marc Cucurella seen taking part.
With his 23rd birthday just around the corner, James has been enjoying the start of his return to first team training during the warm weather camp.
He has missed a number of weeks of first team football following an injury suffered at the San Siro. The issue eventually saw him ruled out of the World Cup as part of the England side.
James mistake in training
The wing-back jokingly claimed that he was still rusty after being called out in gest by Aubameyang for an error in training.
A video on the official Chelsea Twitter page has shown where the mistake has come from, with him hitting the net with a relatively simple header at the front of a rally.
The team spirit is certainly something which looked commendable in the video released by the club, with them safe in the knowledge that they will need to produce a very strong second half of the season to save their campaign.
Graham Potter will be delighted as some of the first team stars will have had the break from football to return to full fitness, with James leading the list of absences that have hit the Blues hardest.
Ben Chilwell and Wesley Fofana are other defenders who have travelled with the squad to Abu Dhabi, as they continue their return from leg injuries. With the pile-up of fixtures not set to get any easier, having a fully fit squad is imperative for the fight on three remaining fronts.