He was in the MLS Re-Entry draft list in December (players over 22 whose contract hadn't been extended by current club i.e. Atlanta). The list said there was an option, so presumably the loan deal (which is with MLS, not Atlanta) could be extended if another MLS club wanted him. He wasn't picked up in that draft, but is now made available to all MLS clubs on first come, first served basis. No idea how long that remains open for.