3. Jamie Gibson (Northampton Saints)
The 29-year-old back row was released in June at the conclusion of his contract, but has been brought back into the squad at Franklin’s Gardens to cover Tom Wood – who will be out of action for a minimum of three months – when the Gallagher Premiership resumes in August.
4. Matt Garvey (Gloucester)
The 32-year-old joined Gloucester on a short-term deal following his exit from rivals Bath at the expiry of his contract. He can play lock or in the back-row, and has joined up with the Cherry and Whites for the remainder of the Premiership campaign.