Port Vale are the visitors to The Den on Tuesday night, and have not won away from home since a 1-0 victory over MK Dons on October 9.
Caretaker manager Michael Brown's side are on a six-game winless run, and are struggling in 19th place in League One, just three points above the relegation zone.
Lucas Ball spoke to Vale fan Andrew Proctor ahead of the Valentine's Day clash.
What made you support Port Vale?: My dad always supported Vale, so I guess I just followed in his footsteps, like most young football fans. When I first started going to games, in the mid-90s, they had a good side, so that probably influenced my decision a bit too.
Do you think that Port Vale will be relegated this season?: To be frank, if we do not start picking up some points on the road, then yes. We've only won one away game all season and some of the performances have just been embarrassing – especially the 4-0 loss at Wimbledon and 4-1 defeat at Bury.
What did you think of the club's transfer business in January?: We were weakened massively as our best goalkeeper, Jak Alnwick, moved to Rangers for a quarter of a million pounds, and we only replaced him with a youngster (Leo Fasan) from Celtic.
We also sold Anthony Grant, which was disappointing, and brought in quite a few young players on loan deals. The pick of the bunch looks to be Des Walker's son, Tyler. He's scored two goals in four games so far.
Who will Millwall have to watch out for on Tuesday night?: Likewise, who do you think Port Vale will have to look out for from the home side? Our best player (Alnwick) was sold in January, so that could make it easier for you guys.
Our two centre-halves Nathan Smith and Remie Streete are decent, so could make it harder for you coming forward. Ben Purkiss, at right back, is awful though.
Lee Gregory and Steve Morison will be a huge danger to us as they are both easily capable of 20 goals a season. If only we had strikers like that!
You've kept a lot of clean sheets recently, especially after the arrival of Jake Cooper, so he's someone that we'll have to look out for in both boxes. A strong defence is usually a sign of a good team.
Finally, a score prediction?: I'm not particularly confident going into Tuesday, especially considering our recent away form, so I'll go for Millwall 2-0 Port Vale.
I'd guess at there only being around 100 Vale fans making the journey too.