Aaron Shingler is to return from Wales' tour to Australia as the back row forward is suffering with a dead leg.
Shingler was hurt in on 12 June and joins wing Aled Brew and number eight in returning home early.
Brew bruised a hip in the first-half against the Brumbies in Canberra while Faletau broke a bone in a hand.
Centre Jamie Roberts and hooker Huw Bennett did not not travel to Australia because of knee and Achilles injuries.
Melbourne Rebels back-rower Gareth Delve replaced Faletau in the Wales squad but the Welsh Rugby Union have confirmed that no new players will be added to a squad that is trimmed to 32 players.
Dan Lydiate, meanwhile, is carrying an injury and it has already been confirmed that in an attempt to solve a persistent ankle problem when he returns from Wales' three-Test tour to Australia.
Delve, meanwhile, is struggling with a knee injury sustained in and was not available for second for .
Wales squad for Australia tour:
FORWARDS: Luke Charteris (Newport Gwent Dragons), Ian Evans (Ospreys), Bradley Davies (Cardiff Blues), Rhys Gill (Saracens), Richard Hibbard (Ospreys), Paul James (Ospreys), Gethin Jenkins (Cardiff Blues), Adam Jones (Ospreys), Alun Wyn Jones (Ospreys), Rhodri Jones (Scarlets), Ryan Jones (Ospreys), Dan Lydiate (Newport Gwent Dragons), Ken Owens (Scarlets), Matthew Rees (Scarlets), Justin Tipuric (Ospreys), Josh Turnbull (Scarlets), Sam Warburton (Cardiff Blues), Gareth Delve (Melbourne Rebels)
BACKS: Ashley Beck (Ospreys), Andrew Bishop (Ospreys), Alex Cuthbert (Cardiff Blues), Jonathan Davies (Scarlets), Leigh Halfpenny (Cardiff Blues), James Hook (Ospreys), George North (Scarlets), Mike Phillips (Bayonne), Rhys Priestland (Scarlets), Harry Robinson (Cardiff Blues), Rhys Webb (Ospreys), Lloyd Williams (Cardiff Blues), Scott Williams (Scarlets), Liam Williams (Scarlets).