Honestly I think Ainge will trade back / out of the 2nd round pick, similar to what he did with the Celts' early 2nd round picks last season.
Either that, or a draft and stash like Jonathan Jeanne.
With that said, I like Swanigan, Ojeyele, Alec Peters, and Bam Adebayo as options at that spot.
A multi-talented swing or big. Look to replace Jerebko / Zeller / Mickey.
Apart from Horford, there isn't a big currently on the team that I feel strongly about keeping.