Cannavaro out of Euro?

Italy has suffered a bolster right in the first training session with their star defender and the captain and World player of the year,Fabbio Cannavaro going down after a collision with Giorgio Chiellini,another defender.He suffered a knock on his left ankle.He stayed on the ground for quite some time after being taken to the hospital for an x-ray.
The test results would be out in 12hrs time.
If the news of an injury are confirmed then that would be very bad news for the Azzurri who would be capped for the 117th time.
Who should be his replacement is the question?