Celtic full-back Emilio Izaguirre has withdrawn from the Honduras squad with a hamstring injury.
Scotland's player of the year had been due to play for his country in the CONCACAF Gold Cup in the United States.
It could mean that Scotland's player of the year will be unavailable to manager Neil Lennon for pre-season training and the club's tour to Australia.
Izaguirre, 25, had to pull out of an international match against Ecuador in February with a similar complaint.
And the following month he was injured by Celtic team-mate Ki Sung-Yueng in a tackle when Honduras faced South Korea.