I don't think he has long left. The Italian government was desperate to arrest him and arrested his inner circle. Most Sicilian bosses do not flee there territories when they are on the run. Messina still has a few trusted lieutenants not in prison, but with the amount of pressure the Italian government has put on the mafia clans, he won't stay hidden for very long unless he left Sicily already.
He does not trust even "trusted lieutenants" with where he is. He only trusts his blood family.
He's been on the run for 20 years and people have been saying for 20 years he doesn't have long left.
