Caleb Grill joins Celtics camp on Exhibit 10 deal

Boston has signed free agent guard Caleb Grill to a training camp contract, according to Paul Garcia of The Spot Up Shot. The deal is expected to carry Exhibit 10 language, letting Grill earn a bonus worth up to $91K if waived and he spends 60 days with the Maine Celtics.

The 26-year-old went undrafted out of Missouri in 2025 and spent last season split between the Windy City Bulls and Charlotte's G League affiliate. Boston still has one two-way slot open, which an Exhibit 10 deal can convert into.