"I am forever grateful to all of you, but even a half-billion dollars wasn't enough to get me to want to stay with you."
Whatever dude.
(I'm just being salty - I get that this team is a turd sandwich rn and he'd rather have a chance at winning.)
I doubt he was going to take an extension from anybody. I think the Padres have zero shot of signing him long term either. He decided long ago that he was going to go to Free Agency, just like Harper and Rendon before him