Dublin's Ciarán Kilkenny looks to be a doubt for the rest of the National League campaign after picking up an injury in Saturday's night's loss to Tyrone.
The Dublin County Board confirmed this afternoon that Kilkenny would be sidelined for four to six weeks with a medial ligament strain.
Tyrone ended Dublin's unbeaten run in this year's league with a 0-18 to 1-14 victory at Croke Park.
Kilkenny lasted just six minutes of the game after twisting his knee. He was replaced by Craig Dias.
The confirmation that Paul Flynn will be fit for this weekend's clash with Down provides more welcome news for the Dubs.
Flynn needed treatment on his left hamstring towards the end of the loss to Tyrone, but has since been given the all clear to face Down.
No such good news for Rory O'Carroll - he will undergo a minor operation on his ankle and will certainly miss both the visit of Down and the trip to Ballybofey to face the All-Ireland champions Donegal