Yesterday, T-Mobile and MetroPCS announced their intention to merge into one company. Today, Aaron Kirchfeld and Scott Moritz of Bloomberg report, fellow carrier Sprint is prepping a counter-offer for MetroPCS:

Sprint is crunching the numbers and holding talks with its advisers to weigh the feasibility of a higher offer, said the people, who asked not to be identified because the talks are private. The Overland Park, Kansas-based company began re- evaluating a MetroPCS offer a few weeks ago, before the T-Mobile deal was made public, and could decide as early as next week whether to pursue an offer, two of the people said.