Monaghan's Barry McGinn has become the latest player to be struck down by a cruciate knee injury.
Clare will be without All Star midfielder Conor Ryan for 2017 after he was advised to take a year out.
The Club Players Association has confirmed that an application to speak at GAA Congress has been turned down.
Mayo full-back Kevin Keane will miss the rest of the season due to a cruciate ligament injury.
Donegal midfielder Neil Gallagher has retired from inter-county football due to a persistent back injury.