Failed Root Canal Done 15 Year Ago, Abscess Forming, What Is The Best Action? (photo)

I had a failed Root Canal done a long time back. I ended up chipping some of my tooth recently and hence saw a dentist. He did an X ray which I am attaching. There is no symptoms, no pain or swelling whatsoever. I am not sure what the best course of action is. Should I get it extracted or get a re-root Canal done. There is no pain in the tooth and there is no sensitivity, it perfectly normal atleast when I bite from that area.