Holsey, a 6'4 215-pound receiver, spent two seasons at the University of Buffalo (2016, 2017) playing in 24 games and racking up 51 receptions for 737 yards and two touchdowns. His best game came in 2017 against Western Michigan where he caught six balls for 143 yards and a touchdown. Previous to his time at Buffalo, the Philadelphia native played his freshman and sophomore years of football at Independence Community College in Kansas. At ICC Holsey compiled 102 receptions for 1,203 yards and 13 touchdowns. Holsey played High School football in Chesapeake, Virginia.