Joe Hart and Oleksander Zinchenko were among the Manchester City players flying to the United States for the International Champions Cup despite their uncertain futures at the club.
Hart, the former England goalkeeper, has spent the last two seasons on loan -- first with Torino, then West Ham United -- and has not featured in a game for City since August 2016.
The 31-year-old, who was left out of the World Cup squad, wants a permanent move away from City but was a surprise inclusion when the squad left for Chicago on Tuesday.
Zinchenko, 21, is also part of the touring squad despite strong interest from newly promoted clubs Wolverhampton Wanderers and Fulham.
The Ukraine international impressed as an emergency left-back last season after Benjamin Mendy tore the anterior cruciate ligament in his right knee and missed seven months.
But with Mendy back to full fitness, Zinchenko's first-team opportunities could be restricted this season.
Riyad Mahrez, who joined from Leicester City last week, was also on the flight, ready for his club debut in the friendly with Borussia Dortmund at Soldier Field on Friday. Aymeric Laporte, Claudio Bravo and Phil Foden also made the trip.
Germany winger Leroy Sane will join up with the squad when they land in the U.S. and Patrick Roberts, Jack Harrison and Jason Denayer, who spent last season on loan, are also travelling.
Manager Pep Guardiola was not expecting any of his World Cup players to join up with the squad but has been boosted by the news that Mendy and Portugal international Bernardo Silva will join the tour later next week.
Silva will be in New York ahead of the clash with Liverpool, and Mendy, who has played just 260 minutes for City and France this year because of his injury, will be in Miami ahead of the final game against Bayern Munich.