The 15 year-old caught the eye in last night's preseason friendly win against AC Milan in Singapore.
Asked what they plan to do with Dowman, Arteta said after the 1-0 victory: "No, we don't know, with all the young kids at the end, they are in and around the team constantly, and they are really used to the dynamics, the demands.
"Especially raising the physical levels, because the demands, and actually to be able to perform and impact the game at that level, it demands really, really high physical standards, and they are getting that, and that gives them another platform, and then they will have to earn it."
On 18 year-old Ethan Nwaneri, Arteta added: "Well, really good, I think yes, right away after a few holidays, those kids, they come back from the summer, and they look different already, they look more mature, they have a better presence and Ethan certainly, he’s been training really hard.
"They only had a couple of training sessions with us, so for him just to be able to play 45 minutes in that interval, is a really positive thing, and the same with Marli, the same with Josh, so really happy with all of them."