Mayo sweat over 'worrying' knee injury to Aidan O'Shea

Aidan O'Shea of Mayo in action against Brian Fenton of Dublin during the All-Ireland SFC final last year. Picture: Eóin Noonan/Sportsfile

Mayo are sweating on the fitness of talisman Aidan O'Shea who suffered what is being described as a 'worrying' knee injury as the county returned to training.

The Connacht champions were training at MacHale Park in Castlebar for the first time since Covid-19 restrictions were lifted when the incident occurred.