Bairstow dislocated his shoulder on Sunday and is day-to-day.
Bairstow signed a one-year contract Monday with Brisbane of Australia's National Basketball League, NBL.com reports.
Bairstow was waived Sunday by the Pistons, Vince Ellis of the Detroit Free Press reports.
Bairstow is acquired by the Detroit Pistons, NBA.com reports.
Bairstow won't play in Wednesday's season finale against the 76ers, K.C. Johnson of the Chicago Tribune reports.
Bairstow (back) has been ruled probable for Saturday't tilt with the Pistons, Nick Friedell of ESPNChicago.com reports.
Bairstow (back) isn't traveling with the Bulls and will miss Thursday's game against the Rockets, Bulls radio play-by-play announcer Chuck Swirsky reports.
Bairstow (back) has been ruled out for Monday's game against the Hawks, Nick Friedell of ESPN.com reports.
Bairstow (back) has been ruled out for Saturday's game against the Magic, K.C. Johnson of the Chicago Tribune reports.
Bairstow (back) has been ruled out for Thursday's game against the Knicks, Nick Friedell of ESPN Chicago reports.