Manager Jim McGuinness is confident Donegal's injury problems will have cleared up in time for the Ulster Championship final against Monaghan.
The All-Ireland champions are aiming to complete a hat-trick of Ulster titles in the 21 July Clones showpiece.
Karl Lacey, Neil Gallagher and Paddy McGrath have been Donegal's main fitness concerns for the game.
"They are heading in the right direction and are almost fully fit," said McGuinness.
"We must prepare as best we can to deliver a performance in the Ulster final.
"It is not about pressure really - it is about getting everybody fit and moving forward."
Monaghan are making their first appearance in a provincial final since 2010 when they were well beaten by Tyrone.
Donegal may be hot favourites to retain the crown, but boss McGuinness has identified the opposition's power as a cause for concern.
"Monaghan have a lot of big men, probably more than us. They are very fit and strong," he said.
"Kieran Hughes and Darren Hughes are dynamic big men so they are going to bring a lot to the table.
"In Conor McManus, they have one of the top five forwards in the country.
"Monaghan do not fear Donegal, they have beaten them twice in six years."
McGuinness said Monaghan were a threat because they have not win the title since 1988.
"The will be bringing a hunger to the final," he added.
"We had that in 2011 and have sustained it over the last couple of years.
"We were ravenous to win it and get over the line because there had been an 18-year gap.
"Monaghan want desperately to fill that void as well and we understand that."