Rangers say they are taking legal advice after a scheduled friendly was cancelled.
The Ibrox club were due to fly to Canada on Tuesday to face Benfica in the Eusebio Cup three days later.
But in a statement on Saturday night, Rangers said Benfica had pulled out.
"Rangers were due to fly out to Canada for the match -- scheduled for Tim Hortons Field in Hamilton -- on Tuesday 3 October but were informed of Benfica's decision only hours ago," the statement read.
"The organisers, Elite Soccer Entertainment,...