Josh Alper has an article for NBC New York on the Yankees' options to replace Pettitte:
The former Phillie is having a nice season with the Astros as they circle the drain in need of young players to help build another contending team. He's got a ton of experience in pennant races, is a free agent after the season and has also done a lot of bullpen work in the last three years. That's an appealing trait for the Yankees since Myers, or any acquisition, would likely wind up in the pen before all is said and done. The drawbacks are that he's going to be a target for a bunch of teams and that he hasn't always dealt well with media scrutiny, much of it stemming from an incident where he hit his wife.