Locke signed for the Chiefs from Coventry in January
Exeter Chiefs have named their 12-man squad for the Middlesex Sevens tournament at Twickenham on Saturday.
Paul McKenzie will return to the squad after recovering from a groin strain.
Drew Locke will also play after serving a week's suspension after admitting a charge of lifting in the group stages of the Premiership Sevens.
Exeter will play in the tournament against teams including Leicester Tigers, the British Army, and the Kenyan and England Sevens sides.
Exeter Chiefs Squad: Herbie Stupple, Chris Reakes, Eoghan Grace, Garrick Cowley (capt), Josh Matavesi, Paul McKenzie, Dave Bargent, Jamie Fleming, Charlie Walker-Blair, Drew Locke, Mike Canty, Rob Coote