Njoku (knee) remained sidelined at practice Thursday, Scott Petrak of the Elyria Chronicle-Telegram reports.
Njoku, who was also a spectator for Wednesday's practice, will have one more chance to get in some on-field work before the Browns post their Week 16 injury designations Friday. If Njoku ends up missing his second straight game Sunday versus the Bills, rookie tight end Harold Fannin would once again be locked in for a sizable role after playing 90-plus percent of the offensive snaps in each of the previous four games.