MLB.com

What if one of the owners in my Keeper League does not want to return or cannot return?

We will let the rest of the owners in the league find a replacement for that owner. If they cannot, BBM will try to find a replacement. This is why we are requiring confirmation of continuing in the Keeper League before the draft begins. If someone is not returning to a Keeper League it gives the other owners in that league and BBM time to try to find a replacement. 

For Returning Keepers who have owners in their league who have not returned for this year, after a period of time, leagues will be able to 're-assign' teams that have managers that do not want to continue or BBM can assist in finding managers to play them.