Coach Brandon Staley expects Allen (knee) to suit up Sunday against the Vikings, Gilbert Manzano of The Orange County Register reports.
Allen officially is questionable to play after logging a pair of limited practices Thursday and Friday. He's been good for a significant target share on a weekly basis this season, earning at least eight in seven of eight games. Such volume could reap rewards versus a Minnesota defense that has conceded 8.7 YPT to wide receivers this season (ninth-most in the NFL).