Gloucester’s Henry Trinder and Sale’s Marland Yarde have been called up into England’s training squad for this week’s camp in Brighton.
London Irish full-back Ben Loader sustained an ankle injury over the weekend and will remain with the England U20 squad for further treatment.
Sale fly-half Cameron Redpath will report to camp on Monday for treatment on a knee injury and is not expected to train this week.
England face the Barbarians on Sunday May 27 at Twickenham Stadium.
Following the conclusion of the Premiership semi-finals next weekend, a final training squad will be confirmed to prepare for the Barbarians match.
England will play South Africa in a three-Test series, live on Sky Sports, in Johannesburg (9 June), Bloemfontein (16 June) and Cape Town (23 June).