Greyson Kelley is a curious choice. There are hundreds of Division I players remaining in the transfer portal and Calhoun selected a 6'1" guard from a 5-23 Division II team. Kelley does not have a demonstrated history of sustained success. He averaged 2.3 points per game in 2018 - 2019.
Kelley can shoot. He was a 91% free throw shooter over a large sample size in 2019 - 2020. On the other hand, his assist to turnover ratio was poor, which suggests he is not much of a ball handler.
Coach must know something not apparent from the record. He may feel a pure shooter is necessary to balance a team of slashers and grinders. Calhoun recruited Kendall Hampton a couple of years ago for the same role.