Leicester will be without forward Dom Barrow until Christmas, Tigers boss Richard Cockerill has confirmed.
The 22-year-old joined from Newcastle Falcons in June, but is still recovering from a cruciate knee injury.
"Dom arrived from Newcastle with an ACL injury," Cockerill told BBC Radio Leicester. "It will be Christmas time before he's back."
However, forward Jordan Crane and fly-half Owen Williams could be fit for the start of the Premiership season.
Crane, 29, is not currently taking part in the club's pre-season campaign following a minor operation on a knee problem, while 23-year-old Williams is still undergoing rehab after knee ligament surgery.
Leicester face London Irish in their opening game of the new campaign on Sunday, 18 October.