A report earlier this month from The Boston Globe's Nick Cafardo said that many teams have given up on persuading Oswalt to pitch rather than retire, and that he may want to pitch for just half a season.
Oswalt, who owns a career 163-96 record and 3.28 ERA in 12 seasons, appeared in 17 games for the Rangers in 2012, making nine starts and finishing with a 5.80 ERA. He has struggled with injuries, particularly back problems, for the past several years.
The Mets could throw the right-hander into the mix of a rotation that at the moment includes left-handers Johan Santana and Jonathan Niese, as well as right-handers Matt Harvey, Dillon Gee and Marcum. Oswalt could also be an option as a reliever, as he shifted to the Rangers' bullpen during September and October last season.