Odin has no friends, only people who are of use to him. Even that is fleeting. It is possible the old man is different here in your world, but until I see it, I won't believe it.
As far as likelihood of his arrival, my opinion is that he is as likely to come as any of the other pantheon. Certainly there's enough of them. Kratos and his son are here, and they brought me. Thor is here, too, though a different one, or he'd have brought his hammer down on this house, that's certain.