The Harlequins back-row forward and Wasps flanker were due to fly out on Monday but were injured in club games on Sunday and will now undergo further medical assessments. A decision will then be made on when they can join the squad.
England's first match is against France on Feb. 4.
(This story has been refiled to correct Clifford's position.)
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
(Reporting by Neil Robinson; editing by Ken Ferris)
Share
