Excuse my ignorance here but this move seems odd to me. I know that the talk with Sprint has been mergers with Metro or Leap, but what is the possibility of a US Cellular acquisition? It the spectrum of US Cellular all in the PCS band at 1900 as well?
According to the description of US Cellular on this website, the majority of the CDMA network is Cellular band 850, and it also says they have AWS and 700Mhz spectrum, along with 1900.
Sprint can't acquire Metro, as Metro has already merged with T-Mobile.