"I'm delighted to be teaming up with Eddie again... Eddie's got England moving in the right direction, but there's still a lot of work to be done, particularly in attack," Ella said in a statement.
Sydney-based Ella earned four caps during his playing career at full back. His twin brother Mark is widely acknowledged as one of his country's finest players and a third brother, Gary, also represented the Wallabies.
Glen Ella will join a backroom team that includes defence coach Paul Gustard, forwards coach Steve Borthwick and another new arrival, scrum coach Neal Hatley.
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(Reporting by Shravanth Vijayakumar in Bengaluru; editing by John Stonestreet)
