Bill O’Reilly is in talks to head back to cable news in his old 8 p.m. slot, but this time at Newsmax TV, sources exclusively tell Page Six. Newsmax is also chasing other former Fox News talent — Greta Van Susteren and Eric Bolling have been approached to join as hosts of hourlong shows in prime time. Bolling already has a deal with CRTV for a digital show. Adding to the Newsmax mix could be former White House press secretary Sean Spicer, who we’re told is set to star on a politically focused late-night panel show. An insider told Page...