Try Benoit Costil. He's supposed to be really good.
Else, get Grohe. I think he's supposed to have a 3M odd release clause. Very good buy. Depending on your budget, you could maybe aim a bit higher and get someone better than Robinson? Ochoa would be brilliant and if you're lucky, you might pick him up for 6M odd (in my game he wasnt going for anything less than 10 though).
Tomasz Kuszczak from Man Utd is pretty good and is generally very cheap. So is Fabianski from Arsenal but doubt if he'll come to you because of the love and affection shared between the two clubs!
Try Joao Carlos. I've just got him but sadly he didnt get a WP, so have had to send him to my feeder club. Will be great in a couple years though I'm sure!!