Duff McKagan posted a message on his Twitter page yesterday, that seems to be hinting at a possible reunion with his former band Guns n’ Roses. The message reads: “Argentina, Paraguay, Bolivia, Brazil! See y'all in the next few weeks, Si? GNR.” So it would appear that McKagan will go on the road with the band during their South American tour. The tweet was also accompanied by a picture of two pieces of paper with Guns n’ Roses song names on them, seemingly a setlist that Duff is rehearsing.