The goalkeeper is strictly backup to Alisson Becker at Anfield.
Keane told the Liverpool Echo: “How long do you hold fire for? That's his problem.
"Is he good enough to play No.1 for a Premier League team? I definitely think he is from what I've seen of him. He looks calm, authoritative and he's very good with his feet. The problem is you've got one of the best goalkeepers in the world in front of you - so what do you do? Only he can answer that. There will definitely come a stage in his career, maybe in a few months or in a year, where he will want to go and play regular football.
“He's going to have a problem because he has the best keeper in the world in front of him. He has to make a decision himself on whether to stay or go. I would encourage any player to try and play as many games as you can. He is 23, a good age for a goalkeeper, but only he can answer whether he is happy or wants to leave."