A win for Armagh here will see the Orchard County promoted to Division 1 of the Allianz Football League, while victory for the Banner men will maintain Clare's Division 2 status for next year.
Roscommon are in a strong position at the top of the table and look set to be crowned champions regardless of what happens this afternoon.
Laois are just behind Clare towards the bottom of the table and face already relegated Fermanagh, so Clare could really do with a win in Ennis.
Here's everything you need to know about the match:
Where and when is the game?
The fixture takes place at Cusack Park in Ennis on Saturday, September 24.
What time is throw-in?
The clash is scheduled to get underway at 2pm.
What channel is it on?
The match will not be televised live, but will be shown on GAAGO for a cost of €5.
You can also follow updates with The Irish Mirror's live blog.
Betting odds
Clare win: 5/2
Armagh win: 4/9
Draw: 15/2
