Wilfried Zaha and Marc Guehi will not travel with Crystal Palace for their preseason tour of Asia and Australia.
Palace are set to play Liverpool in Singapore, Manchester United in Melbourne and Leeds United in Perth over the next fortnight.
The Eagles state these omissions are because a selection is not currently fit, while others do not meet entry requirements of going into the two countries.
A club statement said: "The remainder of the first-team squad will be based in South London for a domestic training and games programme led by assistant manager Osian Roberts.
"Some of these players are not currently fit and therefore will not travel on tour, whilst some did not meet the entry requirements for Singapore or Australia when travel arrangements were made.
"One match has already been confirmed for this group of players (v QPR on 23rd July), with up to two more matches to be announced in the coming days."
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!
