After waiting until spring training and failing to land a job to his satisfaction, Roy Oswalt has told clubs that he might pull a Roger Clemens and return midseason, according to a baseball source. Oswalt, 34, has told teams that he plans to keep throwing, stay ready and would be willing to return during the season if nothing materializes before then. That approach would mirror what Clemens did in 2006 and 2007, when he returned in June to pitch for the Astros and then the Yankees.