But in the longer term, the company can likely grow earnings by 30% without the overhang from its old Nextel network and possibly even 40% by integrating Clearwire. Sprint is only just now able to truly go after new customers, he said, which means the company is only just getting started. Cramer said that some investors are worried about a funding gap at Sprint that will prevent it from building out that much-needed 4G network. But Cramer said he's not worried because its new alliance with SoftBank will give it access to all the capital it needs to once again become a major player in the U.S. wireless market. He said that he's a buyer of Sprint on any weakness.