Starting in the fall of 2014, the Atlantic Sun Conference will drop from 10 schools to eight.
Mercer and East Tennessee State announced in May they are moving to the Southern Conference, which had openings thanks to Georgia Southern and Appalachian State moving up to the FBS.
The announcement came only two months after A-Sun member Florida Gulf Coast became the first 15-seed to reach the Sweet Sixteen of the NCAA Basketball Tournament.
The Eagles' run certainly brought exposure to the conference, which could come in handy if it decides to expand.
"We are going to look at our options. There's some interest from various parties that we're going to explore in the coming months. We may stay at eight, but we may [do] something else," said Commissioner Ted Gumbart.
The commissioner didn't name any specific schools of interest, and said there isn't a rush to pick them.
The A-Sun is headquartered in Macon, and does not plan to move anytime soon, even with Mercer's departure.