The absence of Cameron would be a blow for the U.S. as Jurgen Klinsmann prepares to announce his squad on Sunday .
Cameron was injured on Oct. 22 in the dying moments of Stoke 's win against Hull City .
The absence of Cameron , who was injured on Oct. 22 in the dying moments of Stoke 's win against Hull City , would be a blow for the U.S. as Jurgen Klinsmann prepares to announce his squad on Sunday .