Sources familiar with the situation tell us that Olbermann’s agent recently went to NBC complaining that Keith — who has the most popular show on MSNBC — was underpaid at $7 million per year. NBC execs told Olbermann’s agent they would not cough up anymore money.

Network execs were well aware that Comcast wanted Keith gone because he was “a loose cannon that could not be controlled.”…

Our sources say Olbermann will, however, reappear soon with a presence on the Internet.