asconcelos, 21, is set to undergo surgery on his ankle after suffering the injury whilst warming up ahead of the final day of their County Championship clash against Derbyshire.
Stevens who has been at Kent for fourteen years will only be eligible for Derbyshire’s T20 matches with his availability extending to the knockout stages should Derbyshire get there.
Within 24 hours of a loan deal being agreed Bamber is already in action for Gloucestershire as they host Leicestershire in a battle of the bottom two sides in Division Two.
The left-arm seamer, who has 178 First Class wickets to his name at an average just above 30, had a contract set to expire at the end of this season before the extension.