Josh Tyrangiel, the chief content officer at Bloomberg Media, is already being talked about as a candidate to replace Deborah Turness as president of NBC News. 
 
 The Bloomberg Businessweek editor since 2009 was given responsibility for digital, TV and radio last August. “They love him. He is their golden boy,” an executive at a rival media company said. 
 
 Sources speculate that Turness is on the chopping block. She was imported from Britain in August 2013 when Comcast announced it was buying NBC from GE, but formerly top-rated shows “Today” and “Meet the Press” are mired in the ratings, and “NBC Nightly News” is barely beating “ABC’s World News Tonight.” 
 
 Another candidate is Jamie Horowitz, who was poached from ESPN last May to run “Today.” 
 
 “Horowitz is the insider that NBC folks think has the inside shot at replacing her. He’s been kissing up to the Comcast brass with some effect,” said a second source. 
 
 An NBC spokesman told me there is no truth to reports of Turness’ impending replacement. “Deborah is not going anywhere. She’s just getting started. She has the full support of NBCU brass all the way to the top.” 
 
 Turness doesn’t have many allies. “She’s managed to alienate the on-air talent,” said an insider. 
 
 But one of the network’s biggest stars told me, “We have a good relationship. I admire her energy, and I respect the fact that she is trying to change some things that need improvement.” 
 
 Patricia Fili-Krushel, chairman of the NBCUniversal News Group, is also overseeing viewership erosion at CNBC (run by Mark Hoffman) and MSNBC (run by Phil Griffin). 
 
 “All three [execs] are precarious,” said my source. ||||| The newest "Today" show boss is yesterday's news. 
 
 NBC News has axed Jamie Horowitz, the morning show's senior vice president and general manager, after a mere three months on the job. 
 
 Sources said that Horowitz, who joined NBC News in September, had big plans to try and turn around "Today," but ran afoul of internal politics and clashed with established executives and talent at the show — who did not like his ideas. 
 
 Hosts Al Roker, Savannah Guthrie and Matt Lauer are seen on the set of NBC's 'Today' at Rockefeller Plaza in NYC. (Paul Zimmerman/WireImage) 
 
 "He's an agent of change," a source close to the situation told the Daily News. "He knew what needed to be done to improve the show and truly compete with ‘Good Morning America,’ but those who were most comfortable in their jobs and fear such change beat the guy who actually could have made a difference. He had a real plan, it would have shaken some of the foundations at ‘Today’ and those who were most insecure ended up winning this round." 
 
 A high-ranking NBC exec told The News that Horowitz created a caustic work atmosphere during his brief reign. 
 
 He would hold meetings and ask producers to give him the names of other producers who should be fired. Created a terrible atmosphere. 
 
 "He would hold meetings and ask producers to give him the names of other producers who should be fired. Created a terrible atmosphere," a "Today" source said. Horowitz also allegedly "would talk about staffers — including hosts — behind their backs and then claim that they were talking about each other behind each other's backs." 
 
 Horowitz would hold meetings and say to producers: "If this were 'Survivor,' who would you vote off the island?" 
 
 Deborah Turness, news chief at NBC, announced the departure Monday night in a memo to staffers. (Rob Kim/Getty Images) 
 
 After a record 16-year streak, the once-dominant "Today" has trailed "GMA" in the ratings since 2012 and the network has furiously worked to regain its status as the most-watched morning show. Horowitz had been tasked with steering the overall direction of the morning show against its ABC arch-rival, "Good Morning America," while day-to-day operations were -— and will remain — handled by executive producer Don Nash. 
 
 "I want to let you know that, effective today, Jamie Horowitz will be leaving NBC News," the network's news chief Deborah Turness wrote Monday night in a memo to staffers obtained by The News. "He's a talented producer and executive, but, together, he and I have come to the conclusion that this is not the right fit." 
 
 Before joining the show, Horowitz had served as the top programmer at ESPN and developed a number of shows, including "First Take" and "Olbermann." NBC had been courting Horowitz since last fall, and in May the network finally acknowledged he would join it after his contract with ESPN expired. 
 
 Network sources told The News that when Horowitz joined NBC News he told staffers he was going on a "listening tour" to figure out the ins and outs of the morning show. "It was really just a talking tour," a staffer said, noting that the executive spent much of his time at NBC offering ideas and thoughts that didn't go over well. "He wanted to fire everyone," the source said.
– The new head of the Today show joined the program only 10 weeks ago—sort of—and he's already been dropped, the New York Times reports. Jamie Horowitz and NBC News President Deborah Turness "have come to the conclusion that this is not the right fit," Turness said in a staff memo last night. Others at NBC News say the decision wasn't mutual; instead, they suggest, top figures at NBC News wanted the new GM out before he even formally began. Horowitz was coming to NBC from ESPN, which is owned by Disney, which barred Horowitz from officially beginning the job until Dec. 1; the Times notes he started holding meetings with his new colleagues in September. One NBC insider describes awful meetings in which producers were asked to "give him the names of other producers who should be fired." But another source tells the New York Daily News Horowitz was given the boot by those fearing change: "He knew what needed to be done to improve the show and truly compete with Good Morning America." The Today show has been struggling to regain its ratings dominance over GMA (ABC is also owned by Disney), and Horowitz's hiring was likely aimed at reclaiming the crown it lost in 2012. NBC executives tell the Times that tension surrounded his arrival. Recent reports had suggested that he was being considered as a replacement for Turness, and an insider tells the Hollywood Reporter that the pair didn't get along.