The depth of Australia's goalkeeping stocks has plummeted to such a low base that A-League clubs have been asked by Football Federation Australia not to sign any foreign goalkeepers.

A country that was once spoilt for choice of goalkeepers is now bracing itself for a future crisis between the posts with FFA's national teams department fearing they could be without any alternatives to incumbent Mat Ryan and having identified even fewer prospects to eventually replace him.

End of days: Brighton's Mat Ryan could be the last great Aussie goalkeeper. Credit:AP

While the 27-year-old Ryan could spend the better part of the next decade between the posts, FFA sources are genuinely concerned he will be the last great Australian goalkeeper due to a record low number of Australian glovemen plying their trade.

It has prompted discussion between FFA and the operators of the A-League to change regulations of the visa-player rule to allow for more opportunities for Australian goalkeepers to develop.