The current champions beat Armagh in the semi-final replay today with five points to spare.
Much was made of Donegal’s defeat to Monaghan last year.
So Jim McGuinness and his team will be eager to put matters right on July 20.
Donegal will be going all out for a win – and their third Ulster title in four years.
Monaghan eventually saw off Armagh in today’s replay by 1-18 to 1-13, sending Armagh into a qualifier clash with Tyrone.
But the big game – the final – will see Donegal v Monaghan.
Tickets for the match, which is expected to draw another huge crowd to Clones, will go on sale through clubs, online and at Centra outlets from Tuesday.
ARMAGH 1-13 1-18 MONAGHAN
Armagh scorers: A Findon 1-0, T Kernan 0-7, E McVerry 0-1, J Clarke 0-5
Monaghan scorers: D Hughes 0-2, C McManus 1-7, P Finlay 0-3, R Beggan 0-2, S Gollogly 0-1, C McGuinness 0-1, D Malone 0-1, D Clerkin 0-1
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