Had Cumulus wanted ESPN Radio, they would not have ended their deal with Disney and started CBS Sports Radio. There was absolutely NO chance that Cumulus was going to want ESPN. Not in Buffalo or anywhere. Especially now that they also have NBC Sports Radio under their umbrella.
If, as you have contended in the past, local management is allowed to make local decisions on programming, then WHLD may have wanted ESPN content - particularly play-by-play - to compete better with WGR. Entercom found itself with shrinking options for lib-talk content on WWKB, and a chance to provide a flanker for WGR, which is a big investment for them.