CNN/SI are one, so another outside possibility is he brings a fresh entertainment element to CNN, takes over the last page column of SI that Rick Reilly used to do and somebody else does now, and have a podcast on SI. I could see him being good in that jack-of-all-trades thing, as it felt like his last couple years at Grantland was a person who didn't want to delve into sports and the constant digging that requires nowadays with all of the different resources and hubs out there now.
So the CNN/SI angle would give him a more laid-back approach to sports storytelling that it seems like he prefers now, entertainment opportunities through CNN, and, of course, the podcast platform that we love and he loves (BS Report and Bill Don't Lie were No. 1 and No. 2 forever on iTunes top charts, so it's not like SI would not find that viable or worth a shot).
Not the most likely route, but one I could see functioning well the more and more he immersed himself in it and became more comfortable, if it were to happen.