Messi is not fit for Argentina?

Lionel Messi is not fully fit for the Argentina friendly matches, TyC Sports claims
Journalist Martin Arevalo from TyC Sports wrote:

“Messi is not 100 percent. The idea that he is to play. But they will reevaluate it tomorrow according to how it is. Argentina plays with Italia.”

It is also suggested that he has some kind of a muscular strain.