T-Mobile chief John Leger sure knows how to shake up an industry (and rile the competition in the process). In his latest move, Legere is offering AT&T customers that make the jump to T-Mobile a free year of DirecTV Now.

AT&T, as you may know, purchased cable operator DirecTV last year for $48.5 billion. Just last month, the nation's second largest telecom rolled out DirecTV Now, an over-the-top streaming Internet subscription service designed to compete with the likes of Sling TV and PlayStation Vue.

This, folks, is corporate trolling at its finest.

From Friday, AT&T customers that sign up for a T-Mobile One account and open at least two lines of service will receive a monthly bill credit of $35 (that works out to $420 a year) which happens to equal the cost of DirecTV Now's basic package.

Based on wording used on T-Mobile's promo page, the offer appears to be contingent on you actually subscribing to DirecTV Now (meaning you can't use the $35 bill credit for other purposes like to lower your overall monthly bill).

AT&T for a limited time is offering its DirecTV Now "Go Big" plan for $35 per month, down from the $60 MSRP. This bundle includes more than 100 channels including AMC, BBC America, Comedy Central, Fox Sports 1, the SEC Network, TruTV, History and more.