Arsenal manager Arsene Wenger lauded goalkeeper David Ospina as "world class" after his performance against Paris Saint-Germain.
The shot-stopper made numerous saves as the English side earned a 1-1 draw in the Champions League on Tuesday.
Wenger praised the Colombia international for his display, but said he already knew of his - and Petr Cech's - quality.
"I have two world-class goalkeepers, I will repeat that. I know we have enough games to give them games," he said, via the club's website.
"But if you cannot play... you cannot keep as well two world-class goalkeepers that don't get games."
Cech was left on the bench as Ospina made his first appearance of the season for Wenger's men.
But, asked whether Ospina had done enough to start at Hull City on Saturday, Wenger said: "Look, we have the roles that the keepers know.
"And that's why it's important to have clear roles when the season starts and when that changes I inform them. But they know what the roles of the season are."