Colleen Kane of the Chicago Tribune is reporting this morning that Adam LaRoche plans to "step away from baseball" for personal reasons.
As of now, there is no news on what the White Sox plan on doing (assuming LaRoche doesn't reconsider; he's giving it a day or two). Since he's been away from most of spring training with a back injury, they could easily put him on the 60-day DL as a courtesy to give him time to heal and think about what he really wants to do. The other option is to give him a hearty handshake, a pat on the back, and say goodbye. Either way opens up a spot of the 40-man roster and several roles on the team.
With LaRoche as the starting DH and backup first baseman, those two spots suddenly open up. Todd Frazier is the best candidate for the backup first base job with a little help from Tyler Saladino. This also makes the possibility of Avisail Garcia moving to DH full time a possibility or the team could look elsewhere to fill this spot. Also, it could allow the Sox to bring Adam Eaton north as the DH if his shoulder isn't 100% by opening day.