T-Mobile's US branch may land a deal with another carrier to grow its network much more rapidly, a rumor maintained on Friday. Sources for the German paper Handelsblatt claimed that Deutsche Telekom, T-Mobile's parent, is in the "early stages" of looking for a partner that would help it build out the network through a cash infusion. The top candidates so far include budget carrier MetroPCS, WiMAX-based Clearwire and even AT&T, any of whom could get a small stake in T-Mobile in return for the investment.