Bourgeois, 34, has seen MLB action in each of the last eight campaigns, twice topping 200 plate appearances in a single season. He did that last year for the Reds, slashing just .240/.294/.332 with three home runs and three stolen bases.
With the move, Chicago adds another depth option in the outfield. Bourgeois has spent most of his big league time in center, but has also played both corner positions. While the Sox are off to a nice start, the club has received underwhelming contributions from regular center fielder Austin Jackson and several bench players.
The speedy Bourgeois was off to a sturdy .356/.385/.442 start in his first 109 plate appearances at Triple-A after joining the D-Backs as a minor league free agent. But he was passed over for a promotion when the team recently brought up Michael Bourn.