Rookie defender Jack Clark has signed a one-year professional contract at Charlton.

The 18-year-old left-back has yet to make a first-team appearance for the Addicks but was an unused substitute for their FA Cup trip to Sheffield United in January.

Clark and midfielder Alex Stavrinou have both graduated from Charlton's Academy this summer, with the latter putting pen to paper on his pro deal last week.

Midfielder Stavrinou said: "I want to try to get in the first team and make some appearances.

"There are seven subs next season so it would be good to at least get a place on the bench and the club is looking to give youngsters a chance."