Cape Town - Bulls and former Springbok back-rower Jacques Potgieter has been ruled out of the Barbarians' clash with the Wallabies in Sydney on Saturday.
Potgieter, who became a crowd favourite during the Waratahs' 2014 Super Rugby title run, has been ruled out through injury and won't line up for Alan Jones' side at Allianz Stadium.
His replacement is a man well known to both Wallabies and Waratahs fans, with Wycliff Palu joining the squad on Wednesday.
Palu made 139 appearances for the Waratahs over a 13-year span and having retired from international rugby last year with 57 Test caps, he will now line up against Australia on Saturday.
Michael Ruru and Sef Faagase, who featured in the Barbarians' narrow win over the Classic Wallabies at Lismore, have also been ruled out through injuries suffered on Tuesday.
The Barbarians are set to name the 23 that will take on the Wallabies on Thursday.