Stephen Kenny will be hoping for his first victory as Ireland manager as the Boys in Green travel to Helsinki.
What time is kick-off?
The game kicks off at 5pm in the Helsinki Olympic Stadium.
Where can I watch it?
Coverage on Sky Sports Football and Main Event starts at 4.30pm.
The hosts will be missing Thomas Lam, Lassi Lappalainen and Jasse Tuominen due to injury.
Kenny's options will be far more limited.
Ireland have a number of Covid-19 related absentees with Alan Browne, Callum O’Dowda, John Egan and Callum Robinson all ruled out.
Derrick Williams, David McGoldrick, Harry Arter and Seamus Coleman are all injured while James McClean is suspended after being sent off in the scoreless draw with Wales on Sunday.
Here's the full Ireland squad for the game:
: Darren Randolph (West Ham United), Caoimhin Kelleher (Liverpool), Mark Travers (Bournemouth).
: Matt Doherty (Tottenham Hotspur), Enda Stevens (Sheffield United), Shane Duffy (Celtic), Kevin Long (Burnley), Cyrus Christie (Nottingham Forest), Dara O'Shea (West Bromwich Albion).
: Conor Hourihane (Aston Villa), Jeff Hendrick (Newcastle United), Jayson Molumby (Brighton & Hove Albion), Jack Byrne (Shamrock Rovers), Robbie Brady (Burnley), Josh Cullen (Anderlecht), Jason Knight (Derby County), Ryan Manning (Queens Park Rangers).
: Aaron Connolly (Brighton and Hove Albion), Daryl Horgan (Wycombe Wanderers), Sean Maguire (Preston North End), Shane Long (Southampton), Adam Idah (Norwich City), Ronan Curtis (Portsmouth).
What's at stake?
It's very hard for supporters to be enthusiastic about the Nations League, especially after Ireland's penalty shootout exit from Euro 2020 qualifying last week..
However, the Nations League standings will have a direct impact on Ireland's seeding for qualification for the 2022 World Cup so it's very important for the Boys in Green.
Ireland currently sit second last in League B, Group 4 so they will need three wins from three to have a realistic chance of challenging Wales for top spot.
Finland won 1-0 in a dour clash at the Aviva Stadium in September.