"Pama is a hugely popular player within the dressing room and, as a program, we'll be doing everything we can to support him.
"What with Henry's [Speight] knee on Tuesday, and now Pama, it's fair to say it's not been the best of weeks on the injury front but this now provides a new opportunity for a champion to emerge - and we have a group of players willing to put their hand up to be that champion."
The innocuous incident occurred after a tough week of trial matches at Narrabeen, during which Fou handled big contact just fine.
He left training, went home to have a shower, and as he went to put his foot on a stair he slipped and injured his knee.
In a much-needed boost for the Australian side, playmaker Lewis Holland will return to full training next week after recovering from an ankle injury while Nick Malouf (knee) and Tom Cusack (wrist) both came through trial matches against an Australian development side unscathed earlier this week following lengthy lay-offs.
Friend will take 16 players to Darwin for a week-long training camp next Friday in preparation for Rio.