Nelson Agholor declared for the 2015
Agholor had 104 receptions, 12 for touchdowns.
JuJu Smith caught 54 passes for 724 yards and five touchdowns as a freshman. Smith said he was not satisfied with the performance.
"I'm still hungry," he said.
Senior George Farmer and junior Darreus Rogers could have expanded roles.
Farmer had 25 receptions, four for touchdowns. The speed that made him such a highly touted recruit in 2010 was evident when he caught 48-yard and 31-yard passes for touchdowns against Notre Dame.
Rogers caught 21 passes, four for touchdowns.
Two-way standout Adoree' Jackson had a 71-yard catch-and-run touchdown against Nebraska in the Holiday Bowl and will almost certainly play more on offense next season as a sophomore.
Sophomores Steven Mitchell and Ajene Harris also gained experience.
The Trojans are on track to add at least three receivers by the start of training camp.
Riverside City College transfer Isaac Whitney enrolls next week. Jacksonville (Fla.) First Coast High's Tristan Payton and Long Beach City College's De'Quan Hampton have committed and can sign letters of intent Feb. 4.