David Raya says Aaron Ramsdale must "fight for the team" if he returns to the Arsenal side after displacing his rival for the No 1 shirt.
Ramsdale's run of starting every Premier League game since March 2022 was abruptly ended on Sunday when he was replaced by Raya for Arsenal's 1-0 win at Everton.
Raya, who was signed on loan from Brentford this summer, retained his place for Arsenal's first Champions League game since 2017 as the Gunners thrashed PSV 4-0 on Wednesday.
Asked about Mikel Arteta's decision to promote him to the starting XI, Raya said: "That's his choice, it's not my choice.
"If Aaron comes back in he needs to fight for the team and to win games.
"I think it's the first time that two top goalies are on the same team. That's just part of football now.
"The gaffer wants two top players for each position and that's what we have to work with."
Raya said he has been given no guarantees over starting Arsenal's next game - the north London derby at home to Tottenham on Sunday, live on Sky Sports.
"I played the last two games and I don't know what's going to happen on Sunday," he said.
When explaining his reasoning for dropping Ramsdale after the win at Everton, Arteta said he treated the goalkeeping position as any other - even to the point where he has considered changing goalkeepers midway through games.
"It's the same rationale as to why Fabio (Vieira) and Gabby [Jesus] played," he said. "I haven't had a single question about why Gabriel hasn't been starting. He has won more trophies than anybody else in that dressing room, including me.
"I want Aaron to react the same as Gabriel Jesus. The same as Kai Havertz, as Takehiro Tomiyasu. Exactly the same. We play with 11 players, not 10 plus one.
"I'm a really young manager -Read on m.allfootballapp.com