Jack Willis suffered serious knee ligament damage in England's loss to Italy and is facing a year on the sidelines.
Henry Slade's try and some fine kicking from Joe Simmonds earned Exeter Chiefs a hard-fought 19-13 win over Wasps in the Premiership final.
After no further COVID-19 cases were found in testing on Tuesday, Wasps can now prepare to play at Twickenham this weekend.
Exeter are into a fifth Premiership final in succession, while Wasps will seek revenge as they bid to end a 12-year drought.
Sale Sharks can seal the final Premiership play-off place with a win after Saracens stormed back to deny Bath victory.
Chris Robshaw's last game at The Stoop ended in defeat for Harlequins as Wasps enhanced their chances of finishing in the top four.
Saracens and Exeter Chiefs will go their separate ways at the end of the season, but a second-string battle was a reminder of their rivalry.
Leicester Tigers were thrashed by Wasps while Sale Sharks held off Saracens in Wednesday's Premiership matches.
Just under 3,000 fans returned to see Harlequins lose to Bath, while Owen Farrell saw red for a high tackle as Saracens lost against Wasps.
Wasps lost four players to injury in the first half at The Rec and trailed by 13 points, but roared back to claim a battling victory.