I think that would be a very solid option. He could probably be had for a 1 year/8 mil with 10 mil team option at this point. Would probably mean us dumping one of Bonifacio/Johnson/Beckham, but that's not exactly a problem. He and Austin Jackson are both solid ideas for bargain players we could grab.
I was just about to post about Jackson as well. He would be the perfect RHed compliment to Inciarte in CF. OK, maybe not perfect, but he would be a good low cost addition. If The Braves signed both Freese and Jackson, the roster suddenly shapes up like this:
CF - Inciarte (L)/Jackson (R)
RF - Markakis
LF - Olivera (R)/KJ (L)
3B - Freese (R)/KJ (L)
SS - Aybar (S)/ Castro (R)
2B - Peterson (L)/Beckham (R)/KJ (L)
1B - Freeman (L)
C - AJP (L)/Flowers (R)
That roster has many platoon options, and KJ can be moved around the diamond to give guys time off as required.
It certainly isn't a good offense, but if deployed correctly, it could be an average offense. And that would obviously be a huge upgrade for the Braves.