More on RBC's upgrade of Clearwire (CLWR +3.8%): Analyst Jonathan Atkin thinks there's a decent chance Sprint (NYSE:S) will fully buy out Clearwire following the closing of the SoftBank deal in 1H13, in spite of its current refusal to commit. Atkin notes SoftBank is already using the same frequency band for LTE that Clearwire is relying on, and sees the possibility of a deal providing "downside protection" for shares. He also considers a Sprint/Dish Network (NASDAQ:DISH) 4G partnership a possibility.