New signing Adam Matthews made his first appearance for Charlton as their under-23s lost to Burnley at Princes Park.

The Addicks’ 15th summer signing, who penned at one-year deal at The Valley, played 90 minutes in a game which saw them come back from a goal down to lead 2-1 at the interval.

But two unanswered goals during the second half, from Ali Koiki and under-18s striker Mitch George, would seal a 3-2 victory for the Clarets in Dartford.

Matthews, 27, who was released by beaten League One play-off rivals Sunderland in the summer, went on trial with Charlton before being snapped up.

After joining the club, he said: “It’s been a tough summer for me personally, not knowing what was going to happen, so I’m very grateful to have the opportunity to come and train with the boys.

“I want to kick on now and, firstly, stay in the division, but the lads have started really well so hopefully we can keep that going.

“I know Jonny [Williams] and Tom [Lockyer] well from Wales and I played with Beram [Kayal] at Celtic, so it’s been quite an easy transition for me and I’ve been training with the lads for a few weeks now. I feel I can slot right in.”

Matthews has won 14 senior caps for his country, having made his debut in 2011 while he was still at Cardiff City where he began his professional career.