Manager John Sheridan expects a tough game from Millwall but is confident his side can claim victory tomorrow afternoon.
Sheridan has overseen four wins from five games at home since his return as manager in January.
The gaffer, however, knows how tough Millwall will be tomorrow and has paid tribute to their manager Neil Harris.
He said: "It will be a tough game because they are going really well. The manager has done unbelievable, what with the cup as well, to get where they are.
"They have beaten three Premier League teams so you've got to give them a lot of credit for that and the manager has done a brilliant job.
"They are coming off the back of last season as well where they were really strong and unlucky in the play offs so I feel he's doing an excellent job there.
"He's got a good team and when you look at them, you know what you're going to get.
"Each player knows what their job is and they have good players in their team that know what each others strengths are and they play to them and they are effective.
"You don't beat three Premier League teams by luck so a lot of credit goes to them.
"Dave Livermore is there as his assistant as well who played under me, and they are both doing a brilliant job, so it's going to be a real tough game.
"I think they will expect a tough game from us as well and hopefully we will give them one.
"We are at home, I don't care who we are playing, I expect us to win the game and that's what we will be trying to do but I do know it's going to be tough."
Sheridan has an injury-free squad to choose from but admitted it's hard to leave players out the side.
"It's difficult because I left players out on Saturday and they didn't even travel," he admitted.
"It's not something I like doing because they all want to be involved but that's probably the hardest part of my job leaving people out the squad or on the bench.
"I just pick a team which I think will win us a game."
The fans have also responded well to the manager coming back to the club and he praised their efforts ahead of the game.
"The fans have been excellent, I don't know how many we took but they were very vocal but I just want to keep trying to get something from the games when they watch us," he said.
"They have seen us at home of late and they are getting used to us winning so I want that to carry on.
"I want to carry that on with a good win on Saturday but we have got to be cautious it is a tough game but one we can win."
Watch the full interview on Latics PlayerHD.