If last year is any indication, Oswalt is only willing to sign with a couple of teams like St. Louis and other teams close to where he lives.
As for Marcum, if we're to believe Jeff Blair, Anthopoulos didn't really want Marcum here the first time around because of off-field issues that concerned him (AA) and is unlikely to pursue him this time around.
I personally think that the better former Blue Jay (for about an hour) to target is Edwin Jackson. It might be splashier and more expensive than a guy like Oswalt or Marcum, but he's in his prime (only 29 years old) and coming off of a very solid year in Washington.
I didn't hear this. Do you care to elaborate on what his off field issues were? Marcum never struck me as that type of guy.