Hassett, who captained the Kingdom to an All-Ireland in 1997, sustained damage to his wrist and thumb after an accidental fall at the weekend.
Hassett, who played a key role in the victories over Dr Crokes and holders An Ghaeltacht is battling to be fit.
Yesterday team manager John Evans admitted that it “wasn’t looking good” for the Kerry star.
“It looks at this stage that he won’t make it and that would be a huge blow for us,’’ he stated.
And even with more than a week to go to the game the Killorglin manager revealed that it was no more than a case of “hoping against hope”.
“That’s all we can do, hope that he does get some semblance of good news next week.’’
On the credit side, Evans pointed out that key forward Mike Frank Russell will be able to play.
One of the stars of the victory over Gaeltacht, the Allstar was involved in a car accident while returning home from Sunday’s game.
“He has a few aches and pains, but he will be fine,’’ he said.
Evans added: “We will rest him this week.’’