"Sprint Nextel has given its assent to Dish Network's plans to acquire 40 MHz of S-band satellite spectrum in the 2 GHz band, and said that Dish's proposed LTE-Advanced network for that spectrum will not interfere with Sprint's operations on its adjacent 1900 MHz PCS spectrum, according to FCC filings. The position is a reversal from Sprint's initial opinion of Dish's plans."
The rest is here:
Sprint signs off on Dish's proposed wireless venture - FierceWireless