Gillaspie was sent off the 40-man roster and outrighted to Triple-A Charlotte on Thursday.
Gillaspie (toe) was activated from the 7-day DL at Triple-A Charlotte on Friday, Dan Hayes of CSN Chicago reports.
Gillaspie broke a toe during his Tuesday game with Triple-A Durham and will miss 1-to-2 weeks, so he'll start his White Sox career with Triple-A Charlotte, Chuck Garfien of CSN Chicago reports.
The White Sox acquired Gillaspie from the Rays for relief pitcher Dan Jennings, Marc Topkin of the Tampa Bay Times reports.
Gillaspie, 24, has slashed .258/.333/.419 across 36 plate appearances with Triple-A Durham this season.
Gillaspie was reassigned to minor league camp Thursday, Roger Mooney of the Tampa Bay Times reports.
Gillaspie went 1-for-3 with a two-run home run in Wednesday's 3-3 Grapefruit League tie with the Red Sox.
Gillaspie went 2-for-2 with three RBI from two home runs in Sunday's 8-2 Grapefruit League win over the Blue Jays.
Gillaspie, the Rays' 2014 first-round pick, went 1-for-3 with a two-RBI double in Monday's 7-2 Grapefruit League win over the Phillies.
Gillaspie was promoted to Triple-A Durham on Friday, Marc Topkin of the Tampa Bay Times reports.