The 2011 All Star midfielder picked up a leg injury in training during the week and is in a race to be fit for the eagerly-anticipated Páirc Uí Chaoimh game.
Kerry sources said there are major concerns about him taking his place alongside Anthony Maher.
Expert freetaker Sheehan, who has revelled in the central role, will be given every opportunity to get himself right but at this stage the prognosis is bleak.
If so, Seamus Scanlon could be brought in as a replacement, with Colm Cooper and Declan O’Sullivan taking over long range free-taking duties.
Marc Ó Sé is in line to return to the Kerry defence after missing out on last Sunday’s Munster quarter-final win over Tipperary with a hamstring concern.
Meanwhile, there are reports the Central Appeals Committee (CAC) have advised the Central Competitions Control Committee (CCCC) to grant Seanie Johnston a transfer to Kildare club St Kevin’s.
Kildare radio station KFM reported on their Twitter account that the CAC have informed the CCCC they can give the switch the green light after the CCCC had sought clarification from them.
The CAC last week upheld Johnston’s appeal against the CCCC’s refusal to sanction the transfer on the grounds that neither the Cavan County Board nor Johnston’s first club Cavan Gaels had raised an objection to the transfer within the required 10 day window.
If the CCCC follow the CAC’s instruction at their next meeting on Tuesday, it remains to be seen whether Johnston will line out for Kildare this summer.
Under new inter-county eligibility rules, Johnston must first line out for St Kevins in the Kildare senior championship before representing the Lilywhites. However, with no date as yet set for the second round of the competition, Johnston may have to resort to lining out for St Kevins’ affiliated hurling club Coill Dubh in a championship game at the end of the month.
Speaking to TV3 yesterday, GAA director general Páraic Duffy said he wanted to see the saga brought to an end as soon as possible.
“At this stage I just want to see it finished. I think, in fairness to everybody, it’s time we got a definitive decision on it.
“I hope that will happen over the next week if possible. It’s in everybody’s interest to bring it to an end.”