Donegal prepare for massive quarter-final against Mayo

Donegal manager Rory Gallagher says his team have been tested severely in this year's Ulster and All-Ireland Championships.

Gallagher's men surrendered their Ulster crown by losing to Monaghan in the final but have progressed reached the All-Ireland quarter-finals by beating Galway.

Donegal now face Mayo and will be keen to avenge a heavy defeat in the 2013 quarter-finals.