The rumors make it seem as though the team favors Hayward, but who knows what Ainge et al really think? I'm worried about our overall size if it's Hayward, since we'll be losing guys like Johnson, Olynyk, and likely Crowder. That leaves only Horford and the unproven Zizic as 4/5 types, right? Rebounding might not be the end-all-be-all, but you need to keep teams from constantly getting 3rd and 4th shots and play some defense in the paint. Tatum's not going to be up for guarding the 6'9", 235+ lb guys until he fills out.
But Griffin's injury history and mediocre 3 pt shooting are also cause for some concern...