According to Reuters, SoftBank is willing to cede control of Sprint to make a T-Mobile-Sprint merger happen. The company controls 83 percent of Sprint, but it'd reportedly be willing to surrender control of Sprint and retain a minority stake in a merger with T-Mobile. PhoneDog reports: It's said that SoftBank is growing frustrated with Sprint's lack of major growth in the U.S. market, and so it wants to merge with T-Mobile in order to better compete with Verizon and ATT. No talks between SoftBank and Deutsche Telekom are currently happening because of the FCC's 600MHz spectrum auction that prevents collusion between competing companies. Once the auction ends in April, though, it's expected that SoftBank will approached Deutsche Telekom about a deal.