Down's Liam Doyle has been ruled out for the remainder of the championship with a knee injury.
The centre back suffered ligament damage after just 20 minutes of last Sunday's Ulster semi-final defeat to Armagh and will require surgery.
The free-taker, who missed last season through injury, will be out of action for the rest of the year.
Down will meet Offaly in the All-Ireland qualifiers in Tullamore on July 19th.