Talks between the Boston Red Sox and Texas Rangers over infielder Mike Lowell had accelerated and a trade remained a possibility, according to a source. But by late Wednesday night, the source reported the sides were no closer to a deal. "I don't think it's going to happen,'' the source said. The Rangers have been scouting Lowell regularly since he started playing this spring, and have a clear need for a backup first baseman and insurance behind Vladimir Guerrero as a right-handed designated hitter. But the circumstances have changed since last December, when the Rangers agreed to a deal for Lowell in which they were willing to absorb $3 million of the $12 million on the infielder's contract, a deal later voided when it was discovered Lowell needed surgery to repair a torn ligament in his right thumb.