To be fair Championship (now 'Football') Manager comparisons tend to be daft but I feel it's quite appropriate for Robles.
He's that player that has some good physical and technical stats which make you sign him but he'll never reliably conquer his weaknesses which is obviously crucial in a goalkeeper because any error of execution, indecision, or plain wrong action has a high chance of leading to a goal conceded.
If it was all just a computer game you'd let him go before throwing your virtual wonga at what was at best a good reserve.
He seems to be a great lad who is not ashamed to show ambition, I hope he ends up as first choice somewhere decent!