Curry's claim that he was abused by South Africa's Mbonambi is being investigated by World Rugby.
Elsewhere Marcus Smith comes in at full-back and Henry Arundell is on the wing as two of eight new starters.
Scrum-half Ben Youngs makes his first start of the tournament.
Sam Underhill makes his first appearance of the tournament after being called up to the squad as a replacement for Jack Willis during the pool stages.
Owen Farrell continues at fly-half, while coach Steve Borthwick opts for an all-new front row of Ellis Genge, Theo Dan and Will Stuart.
Ollie Chessum displaces George Martin in the second row to pack down alongside Maro Itoje.

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St Kevin's Cruise Into Leinster Junior Football Quarter-Finals Following Muckalee Victory
Parsons Hat-Trick Helps Ireland Complete Series Victory Over South Africa
Milltown Begin Leinster Championship Campaign With Emphatic Victory Over Mostrim
Kildare's Lauren Walsh Finishes Strongly At Maybank Championship
Kilcock Secure Senior Football Survival As Allenwood Suffer Relegation
Sunday Morning Sports Update
Kildare Players Among Try Scorers As Leinster Thrash Connacht In Galway