The Argentine star, who only returned to training this morning, has been ruled out of the club's North American tour
FC Barcelona have announced this Monday that Lionel Messi has picked up a calf injury, ruling him out of the club's United States tour.
The Argentine star was making his first appearance on the training ground since an extended break but was unable to finish the session.
Barça are expected to fly out for their two friendlies against Napoli later today but they must do so without their talisman.
