rbs6nations.com > Italy
Tebaldi, 26, had been in fine form in his first season with Welsh side the Ospreys before picking up an ankle injury in mid January.
But after returning to full fitness, Brunel has opted to bring the player in as winless Italy prepare to face current leaders Ireland at the Aviva Stadium on Saturday before concluding their tournament against England.
The Azzurri are busy preparing at a training camp ahead of the final two games with Tebaldi also joined in the squad by Manoa Vosawai and Masi.
London Wasps' Masi, capped 80 times for Italy, is another player to return to the squad after injury following surgery on his knee last October.