England fly-half Owen Farrell is in danger of missing the final Test against New Zealand in Hamilton on Saturday due to a knee ligament injury.
The Saracens star will be assessed by medical staff today, while teammates Billy Twelvetrees, Luther Burrell and Danny Care are all injury concerns for head coach Stuart Lancaster.
According to The Telegraph, there are fears that Farrell may not even be able to train this week in Christchurch ahead of the third and final Test.
"Owen is the one we are definitely going to have to assess on Monday once he has had 24 hours to settle after the match," Lancaster is quoted as saying.
The All Blacks clinched the series on Saturday after securing a 28-27 victory over England in Dunedin.