Willi Heinz was expected to provide England back-up to Ben Youngs who is set to win his 100th Test cap this Saturday away to Italy.
Willi Heinz will make his first appearance since England’s crushing World Cup semi-final victory over New Zealand when Gloucester host Worcester in the Gallagher Premiership.
Owen Farrell, Jonny May, Anthony Watson and Kyle Sinckler will all be monitored.
Willi Heinz made his Test debut in Sunday’s victory over Wales and was included in England's RWC squad the following day, a recognition he thanks club-mate Danny Cipriani for.
No one would have put money on at the start of the year that Willi Heinz would be in the England World Cup shake-up, but the 32-year-old has defied the odds.
England overwhelmed the back-to-back world champions to reach the World Cup final in Japan.
England scrumhalf Willi Heinz says it's forwards and not the weather that are effecting Rugby World Cup ball handling.
Warren Gatland says Wales will not get carried away after replacing New Zealand as World Rugby’s top-ranked nation.