The 40-year-old Khabibulin was an unrestricted free agent after playing the last four seasons with the Edmonton Oilers. He was 4-6-1 with 2.54 goals-against average and a .923 save percentage in 12 games last season. He played with the Blackhawks from 2003-09.
Emery became an unrestricted free agent on Friday and signed a one-year deal with the Philadelphia Flyers.
The Blackhawks signed 24-year-old Finnish goaltender Antti Raanta to a one-year contract in June. Blackhawks general manager Stan Bowman recently said he was unsure if Raanta would be ready for the NHL next season due to the transition from European hockey.