since 1992.

Wing forward Ryan Bradley was the only injury concern, but he is set to start against Mayo despite doubts over the shoulder problem that surfaced during the Cork game.

Two more key men - centre-back Karl Lacey and midfielder Neil Gallagher - are fit to line out after recovering from minor hamstring injuries.

Donegal are rated as favourites to end their 20-year wait for All-Ireland success, given their impressive passage through to the final with wins over heavyweights Tyrone, Kerry and Cork.

But McGuinness has predictably talked up the challenge that Mayo will put up, highlighting the strength of their performance in overcoming last year's champions Dublin at the semi-final stage.

"For me, in an apprehensive vein in a way, the first half when I was watching it I was thinking, 'Jaysus, these boys are almost unplayable'," he told the Irish News, referring to the Mayo-Dublin clash.

"There was a period in the game when it didn't matter if it was Donegal of Dublin or Cork or Kerry - Mayo were absolutely unplayable.

"The way they were moving the ball early and direct and the accuracy of their shooting from outside the scoring range and inside the scoring range was very impressive.

"The style they played with, moving possession at terrific speed, the near telepathic cohesiveness of their teamwork, the directness they went at the Dublin defence with, the confidence in taking on a chance whatever the distance. Very, very impressive."

DONEGAL (SFC v Mayo): Paul Durcan; Paddy McGrath, Neil McGee, Frank McGlynn; Eamon McGee, Karl Lacey, Anthony Thompson; Neil Gallagher, Rory Kavanagh; Ryan Bradley, Leo McLoone, Mark McHugh; Paddy McBrearty, Michael Murphy, Colm McFadden.