Millwall contest a South London derby with Crystal Palace in the Emirates FA Cup Third Round on Saturday afternoon (kick-off 12.45pm).
The tie - LIVE on ITV - will see the two clubs meet for the first time in nearly nine years, with a place in Round Four on the line.
There will be no replays in this season's Third and Fourth Rounds, meaning that extra-time and a penalty shootout will be required if the score is level after 90 minutes.
Furthermore, all teams are permitted to use five substitutes in the FA Cup across a maximum of three opportunities. If the match proceeds to extra-time, each club will be permitted to carry over any unused substitution opportunities into that period and will be permitted an additional fourth opportunity (excluding the break between full-time and extra-time and half-time of extra-time).
Gary Rowett's side will be looking to bounce back from a Sky Bet Championship defeat at Bristol City last time out. Jed Wallace missed the trip to Ashton Gate and is a doubt once more, whilst Maikel Kieftenbeld may come back into the fold for the visit of The Eagles. Ryan Leonard and Daniel Ballard will miss out, whilst Benik Afobe and Sheyi Ojo have both been given permission to play by their parent clubs.
With nine substitutes able to be named in the matchday squad, the likes of Besart Topalloj, Nana Boateng and Zak Lovelace, who have featured in recent times, may take their places on the bench once more. Tyler Burey's loan deal at Hartlepool United has expired, meaning he may also be amongst the subs.
The Lions will warm up in United For Change t-shirts, with the starting XI holding the United For Change banner shortly before kick-off.
If you cannot make it to The Den, then - as well as on ITV - audio commentary will be available on iFollow, with Audio Match Passes on sale here.
All the important information ahead of this weekend's fixture can be found here - including opening times for the Lions Store, Ticket Office and SE16 Bar. Supporters attending are reminded of the need to produce their COVID-19 vaccination pass or a negative lateral flow test to enter the stadium.
In line with the government's recently increased terror threat, the club is having to further its own policies to stay in line with this change. As such, there will be increased searching of supporters on arrival. Please allow for additional time to enter the stadium. The car park will close to vehicles strictly 45 minutes before kick-off.
Saturday's matchday programme is on sale online and around the ground here, with the front cover inspired by Millwall's meeting with The Eagles in 1922 - 100 years ago.
There's plenty in the way of preview content - if you need something to keep you occupied before kick-off, then manager Gary Rowett, goalkeeper George Long, right-back Danny McNamara and Lions legends Alan Dunne and Paul Robinson have all spoken to millwallfc.co.uk.