Deutsche Telekom is rumored to be in merger talks with MetroPCS, the nation's 5th largest carrier.
Last year the AT&T takeover of T-Mobile USA failed because of regulators opposing the deal. Deutsche Telekom wants to leave the US market as they fail to make money here. The newest rumor is that Telekom is trying to get a merger with metroPCS according to Bloomberg.
The merged entity would be publicly listed. Other options Telekom is considering to solve the T-Mobile USA situation is to take it IPO or sell it. I assume the buyer cannot be another carrier.