Arsenal boss Mikel Arteta insists he has no chosen first-choice goalkeeper.

With David Raya arriving on-loan from Brentford, Arteta says Aaron Ramsdale is not guaranteed as a starter.

"To be better [as a team], the environment has to be better," Arteta said.

"When you have to be at 100% every day, believe me, your level increases.

"We have two great goalkeepers, just like we have two great left wingers, two great holding midfielders, two great strikers. There is no number one - not in any position."

He added, "What happened to Jurrien [Timber] can happen to anyone. If Aaron [Ramsdale] did his cruciate, we have to be prepared and proactive. Now, we have two excellent goalkeepers who exactly fit our model."