Australian second row forward Sitaleki Timani has been cited to appear before the International Rugby Board disciplinary commission.
The citing was for striking an Italian player in the 22-19 Test win in Florence at the weekend.
Timani, 26, who has 10 caps for the Wallabies, is accused of hitting a rival in the 13th minute of the clash and is now in doubt for the final Test of the tour, against Wales in Cardiff on Sunday.
No date for the hearing was given.
If Timani is suspended, Dave Dennis could start in the second row or Kane Douglas if he has recovered from a knee injury.