AT&T is willing to make massive concessions to preserve its buyout of T-Mobile in the light of a Department of Justice lawsuit blocking the deal, insiders claimed late Thursday. Described as a "two-track" plan, the strategy seen by Reuters would see AT&T give up as much as a quarter of T-Mobile's business, including some of the spectrum it was after, customers in key areas, and a pledge to keep T-Mobile's cheaper pricing active. It's "pretty determined" to find a sacrifice that would let it clinch the deal, one tip mentioned, as it wants to avoid court at all costs.