The proposition has been evaluated not only by the Clearwire board itself but by an outside firm as well. As a result of this, all major shareholders like Comcast, Intel and Brighthouse are now ready to vote in favor of the acquisition. According to Clearwire's report, the other offers it has received can't even measure up to Sprint's. What's more, a takeover by another company would be very difficult to happen, because Sprint has the controlling stake. So, love it or hate it, it looks like Clearwire is going to remain faithful to Sprint for the foreseeable future, although there are some stockholders like Crest Financial and Aurelius Capital that are still strongly against such a development.
source: Clearwire via PhoneScoop