Chelsea captain John Terry will miss his club's two-game U.S. tour because of an ankle injury.
The defender was injured May 11 against Aston Villa and did not play in the Blues' 2-1 win over Benfica in last week's Europa League final.
Left back Ryan Bertrand is skipping the tour because of a knee injury.
In its final games under interim manager Rafa Benitez, Chelsea plays Manchester City on Thursday in St. Louis and on Saturday in New York.
Jose Mourinho is expected to take over next season in what would be his second stint as Chelsea manager. Real Madrid said Monday he is leaving the Spanish club at the end of the season.