You mean the scoring record? That's extremely unlikely, his goal/game ratio is really low. It would take another 9 goals to top Riva.
http://en.wikipedia.org/wiki/Italy_national_football_team#Top_goalscorers
Statistically it would take another 28 caps, which would take 3-4 years.
But he will retire with almost 90 caps, that's pretty huge.
Btw if you count up all his stupid misses he gets close. WC98 vs Norway, Euro2000 final, Euro2004 vs Sweden with that lob. What could have been..