Olbermann could indeed be returning to ESPN, with a late-night talk show

Several months ago, rumors quickly percolated then even more quickly dissipated about a possible return of Keith Olbermann to ESPN.  According to Bob Raissman of the New York Daily News (via SportsBusiness Daily), those rumors have resurrected — and they could be more than rumors. Raissman reports that Olbermann is talking to ESPN about hosting…