Legendary coach Kevin Sheedy is urging Greater Western Sydney to do the extraordinary: lure Israel Folau back from rugby for another crack at AFL success.

Hitting back at criticism from former Sydney chairman Richard Colless, who labelled the recruiting of Folau as "irresponsible and dumb", Sheedy said the Wallabies fullback can still become a "top-class" player.

His chances of succeeding now, the Giants' inaugural coach said, were much higher than during the club's debut season when they were the "youngest [and] worst team ever".

The AFL great also goaded the Swans' "easties" supporters, many of whom are unhappy this weekend's final is not being played at the SCG, to "put down your chardonnays" and head west to ANZ Stadium.