Gyokeres was presented to local Singapore fans before today's 3-2 win against Newcastle.
After the preseason friendly win, Arteta's media conference was dominated by questions about the Sweden striker.
He said, "Yeah, we do have plans, we do have a lot of options and we are increasing the quality of the squad and the depth of the squad with all the signings that we've done. We are super happy to have Viktor with us, it's been a long journey to get him over here.
"He's been incredible, he was very clear from the beginning where he wanted to play and how passionate I felt from him from day one when we first spoke. You can see the boys, you can see the environment as well, very excited with his arrival.
"We can’t talk about how the processes work but it's a decision that we take between all of us, especially with ownership, then the board, then Andrea (Berta) and the scouting department, and also myself and we were very clear on the talent that we identified in the window.
"But actually to deliver it is something very, very different and I think the club has done incredibly well, Andrea and his team, they've been absolutely fantastic. So I mean so early in the window, we already have the reinforcements that we wanted."
A debut against Spurs
Arteta was pushed about whether Gyokeres could face Tottenham on Thursday.
He continued: "Well I think he hasn’t had a single training session with the team since the last game with Sporting when they became champions. So we will assess him tomorrow, he's done all the medicals, everything is looking good but to get him up to speed with the right levels of fitness I think is very important.
"So we're not going to stop him, we want him with us as quick as possible but we'll have to assess and the medical team will do that.
"We want our supporters as excited as possible, really believing in what the team can deliver, creating at the Emirates that special atmosphere and all that is going to be super important for us to be successful."