Sprint, Clearwire, and SoftBank have had a busy couple of months, and it looks like things aren't going to settle down for a while longer. CNBC's David Faber has revealed that Sprint and Clearwire are in "active negotiations" for the wireless carrier to purchase the remaining 49 percent or so of Clearwire it doesn't yet own. The deal is rumored to be announced before the end of the year. Sprint acquired a majority stake in Clearwire back in October, bringing its total ownership to 50.8 percent. That move was said to be a condition of Softbank's takeover of Sprint, which was also announced in October of this year. Sprint's LTE plans rely on Clearwire, and a complete acquisition would allow it to control the company's valuable spectrum.