Zaxby's would be my guess also. I had ask a manager at Zaxby's a good whle ago about their expansion plans in the are and she said that Zaxby's had secured permission and secured land out by the new WalMart in order to establish a store in that area.
I was surprised to see WalMart locate another store that close to an existing one and even more so to see restaurants like Zaxby's having two locations that close. Could be that the retail environment will shift to the north and away from the mall area but I doubt it. I think that the Mall area will still be the most desired location for new establishments in this area.