I gather you're asking about the possibility of a "local" Quasar event -- formation of a large accretion disk around SgrA*. Not the near future, no. Gravitatio

I gather you're asking about the possibility of a "local" Quasar event -- formation of a large accretion disk around SgrA*. Not the near future, no. Gravitational radiation is probably the only factor eroding its orbit, and it's a very small factor indeed. You might see a merger between Andromeda & the Milky Way first!