According to one journalist, it seems that Jason Bay really wants to be a Seattle Mariner:
I'm hearing that Bay has been telling his former Pirates teammates he'd stand on his head and sing on E. Martinez Way to play for M's.
I'm just going to throw it out there and say that I think this is a little blown out of the water. Bay might have said, "yeah, I'd like to play for the Mariners" or "it would be really nice to play for the Mariners" or "I'd like to live in Seattle." But something tells me that Bay isn't going around telling people he'd "stand on his head and sing on E. Martinez Way" to play in Seattle for the Mariners.
With that said, I'm sure h'd be just as happy to come back to Boston. Maybe he'd sing "Dirty Water" on Yawkey Way?