Slash says that he is not concerned about Duff McKagan's reunion with Axl Rose and says that he will never get a similar call to play with the GUNS N' ROSES frontman.McKagan played the first of five shows with his former band this past Sunday night (April 6) at Estadio Ferrocarril Oeste in Buenos Aires, Argentina. McKagan is filling in for GN'R's current bassist, Tommy Stinson, during the group's South American tour because Stinson is reuniting with THE REPLACEMENTS for two high-profile dates at Coachella. Slash, who was part of GUNS N' ROSES' classic lineup, tells TeamRock: "What Duff does is what Duff does. It doesn't really concern me. "Duff's relationship with Axl is different to mine. That call to me is just not going to happen." Slash also stresses that he has no problems with McKagan and Rose playing together again. "I don't judge Duff," he says. "He's cool. He just has a way more amicable, neutral relationship with Axl than I do." McKagan joined Axl Rose onstage for the first time in seventeen years at GUNS' October 14, 2010 concert in London. He also performed with the current version of GUNS in December 2011 at shows in Vancouver and Seattle. All three appearances were for a few songs, not full gigs. Rumors that the classic lineup of GUNS N' ROSES would reunite have been around for years, although any possibility of that happening seemed to end when the band was inducted into the Rock And Roll Hall Of Fame and Axl Rose declined to show up. Rose told Billboard.com in 2009 that he doesn't ever expect to play again with guitarist Slash, saying, "One of the two of us will die before a reunion. However sad, ugly or unfortunate anyone views it, it is how it is."