Arteta has been Arsenal boss since replacing Unai Emery in December 2018 and has had to be patient while a major overhaul of his squad has taken place. He believes his job at the North Londoners is a long-term project.
The former Everton midfielder added: “This is never going to stop, this is a constant evolution because the level is not here. The level that Premier League teams used to play and produce in terms of numbers, in terms of stats, has gone through the roof.
“In the history of the Premier League it never existed at that level of playing and competition. So, we don’t know where that limit is.
“Every plan that we do is with players and people that have the mentality that this going to keep evolving, that it is never going to be good enough. And to do that you need to always get people that are aligned with that vision.”