I've probably mentioned his name for the last 2-3 windows, but Joe Gauci in the Australian league is a phenomenal young talent. Is only 23, will likely be our (Aus) keeper at the Asian Cup next month, and just had another impressive game tonight. He is a far better keeper than Tom Glover for example, who was in the same league last season and has been starting recently for Boro, as well as being three years younger.
If we want a young keeper who is good with his feet as well as having tremendous shot stopping ability, who would come quite cheap but with a potential to be worth 3x or 4x what we pay for him (at least) then he'd be a very good option.