Matt Turner is expected to complete his medical on Wednesday.
The American international was brought by Arteta to provide competition to Aaron Ramsdale who has agreed a move to the Emirates back in February.
He made 18 appearances for USMNT and vows to push for a starting role ahead of Ramsdale when he joins Arsenal.
“I’d agree with it [being second-choice] for now,” Turner told Sky Sports. “I’m coming in to push him and become the best goalkeeper I can become, while also making him the best goalkeeper he can become. That’s really my goal for it all.”
He continued: “We [him and Mikel Arteta] have talked a little bit. His main message for me was just to focus on what I need to focus on right now, getting through these next few months, staying healthy, staying fit and getting ready for pre-season and compete.
“The project they have going on there, [I want to be] an important part of the locker room, adding some experience – not a ton of Premier League experience – but national team experience, league experience and playing games in pressured environments. I’ll be an older head in the locker room, being 28.”
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