Betancourt Topic of Discussion Between Padres, Mariners

Geoff Baker of the Seattle Times reports that the Padres and Mariners have apparently talked about Mariners' short stop Yuniesky Betancourt.

Baker says that the Mariners could receive a package of, one of, Chase Headley and prospect Matt Antonelli.

I'm not sure that this rumor has any legitimacy to it especially because the Padres would more likely trade Kevin Kouzmanoff to move Headley to third than trade Headley away. Matt Antonelli would be more likely to be a trade candidate, but since he hasn't played a single game this season, I'm curious as to why the Mariners would even be interested.