The Gunners beat Rapid Vienna in their first outing in the competition this season, while Dundalk were downed by Norewgian side Molde.
Mikel Arteta’s side suffered a damaging home defeat to Leicester at the weekend and the Spaniard will likely make a few changes from that side, but he will also have a trip to Manchester United on Sunday in mind.
Dundalk are third in the Irish Premier Division after a loss to Waterford on Sunday.
When is Arsenal vs Dundalk?
The match kicks off at 8pm on Thursday 29 October at the Emirates.
What TV channel is Arsenal vs Dundalk on and is there a live stream?
BT Sport 2 will be showing the game live with coverage following the Antwerp vs Tottenham match.
Subscribers can stream the action on BT Sport Player or on the BT Sport app.
Arsenal are missing a string of defenders, with David Luiz, Rob Holding, Pablo Mari and Calum Chambers all out.
Willian is available after injury, but Gabriel Martinelli remains out with a long-term knee injury.
The likes of Reiss Nelson, Eddie Nketiah, Joe Willock and Emile Smith Rowe may be involved.
Arsenal vs Dundalk odds
Odds courtesy of Betfair