Michael Murphy scored the final point for Donegal at the end of the first half
DONEGAL lead 0-10 to 2-2 at half-time in the Ulster Senior Football Championship replay.
Their were goals by Shane Carey and Conor McManus for Monaghan
Michael Murphy scored the final point before the half time whistle at Brefni Park in Cavan given his team a two point lead.
Donegal are hoping to reach their sixth consecutive final.
Monaghan are the current Ulster champions but Donegal are hoping to knock them off their perch.