True, im just of the belief that Robles could be a top quality GK, still very young for a gk, and probably improved season on season despite coming in and out of the side
He is 27 in 2 months time, he isnt young anymore. You get keepers like Courtois who is 2 years younger than him, been a number 1 at a top team for 6 full seasons and played over 200 more games than him in his career. He's older than De Gea who has been a keeper at a top club for 8 seasons and has played over 300 more appearances in his career than Joel.
Courtois has played 300 games, De Gea 400. Joel is 2 years older than Courtois, a year older than De Gea and he has played less than 100 games in his whole career. He lets in too many goals that he should save and he is a long way below the standard we need if we want to try and compete with the top teams in the league.
I prefer Stekelenburg but I'd play Joel just because he has a longer future for us as backup so might as well give him more games.