Tyrone manager Mickey Harte could miss tomorrow's crucial relegation battle with Kerry after having an operation last Monday.
The Tyrone County Board confirmed last night that Harte is recovering at home after undergoing "a surgical procedure", saying he will resume his team duties "in the very near future" but not elaborating any further.
Contingency plans are in place in case Harte can't make it to Omagh tomorrow, and his former right-hand man Tony Donnelly, who is no longer part of team management, is reportedly the man lined up to replace him for a game the Red Hand must win by two points to avoid the drop.
There is speculation that team captain Sean Cavanagh may yet not start because of a knee injury. The referee for the game has also changed, with Joe McQuillan taking charge instead of the injured Eddie Kinsella.
Elsewhere, picking up a third black card of the season last week means Donegal's Michael Murphy is suspended for their trip to Mayo.
That has given Colm McFadden his first start of the year and, while Neil Gallagher is out injured, Paddy McGrath has recovered to start.
Donegal's All Star goalkeeper Paul Durcan - now based full-time in Dublin - is set to switch his club allegiance from Four Masters to Ballyboden St Enda's. Dublin footballers have made one change: James McCarthy replaces Philly McMahon.
(*Teams in Fact File)