"MSNBC is close to signing a deal with CNN's Tucker Carlson, paving the way for the conservative Crossfire co-host to fill the 9:00pm primetime position soon to be vacated by Deborah Norville. MSNBC staffers have been buzzing about the possibility in recent days, three sources told TVNewser. One insider speculated that Carlson's program would attract new viewers to the network, but more importantly, "it shows that MSNBC is a priority and folks are trying their darndest to make it work." Carlson feels that CNN hasn't treated him well, a source said. MSNBC executives, on the other hand, are thrilled by...