England fly-half Toby Flood has been cleared of a broken toe after undergoing an X-ray following the 16-15 defeat to South Africa.
But the Leicester star is still doubtful for next week's Test against New Zealand after reportedly leaving Twickenham with his right foot in a protective boot.
Flood's injury will be reassessed by the England medics on Sunday evening, when a decision over the need for any further scans will be taken.
"It doesn't look great," Flood wrote in his column for the Mail On Sunday.
If Flood is sidelined next weekend, Owen Farrell and Gloucester fly-half Freddie Burns would be England's likely options to replace him.
Farrell replaced Flood after 47 minutes against the Springboks at Twickenham, while Burns, who kicked 19 points in Gloucester's 29-3 Aviva Premiership win against Sale on Saturday, has trained with England during the autumn.