He can play anywhere along the backline and although he may not be the big transfer many Gunners fans crave, the youngster has every intention to write his own name into the club's folklore.
"My dad brought me up as an Arsenal fan and I have been going since I was young. I even went to a few games last season. It is all a bit surreal, but it is a brilliant feeling to be here and I am really excited by it," Jenkinson told Arsenal Player.
"I was always a big fan of Tony Adams and I am reading his book at the moment. He was always someone I looked at as a great player and a great leader.
"He is a player I can learn a lot from and I will be looking to follow in his footsteps."
Wenger's track record of allowing young talent a taste of first-team action was another reason Jenkinson did not hesitate to join Arsenal.
"It is up to me to prove myself, but I know if I can, I will be given a chance," he said.
"I owe Charlton a lot, with the way they have developed me as a player.
"I have still got a lot to learn, and now I am at the best place to do that.
"The plan now is for me to go away with the first team in pre-season and I am looking forward to it.
"It is up to me to prove myself, to stake my claim to be a first-team player and that I can be fighting to bring success next season."