Millwall manager Neil Harris is relishing the prospect of welcoming Everton to an intimidating Den in the fourth round of the FA Cup.

The Lions have had a difficult opening half to the Championship season but have a chance to cause another significant cup upset which Harris will hope can provide a boost to their league form and help them pull away from the division's bottom three.

Millwall impressed in reaching the FA Cup quarter-finals under Harris in 2017, four years after they reached the final four and 13 after Harris played when they made the final against Manchester United.

Despite the threat of relegation in the era when the FA Cup has become far less of a priority, the 41-year-old Harris is adamant that it is a distraction that they will continue to embrace.

He admires the talent in Everton's squad and has also predicted they will gradually reach their potential — but has warned them of the unwelcoming atmosphere they can expect at the Den.

"It is an intimidating place (even) for senior internationals," he said. "You see many players come with great reputations and huge wages and price tags and not fancy the Den. I am not saying it is going to be the case for Everton but it is an intimidating place.

"On the day, we can beat anyone in our division and the division above. We are gaining in confidence. We know a big challenge awaits us. But the players can go in and have a right go. That is where our club is at our best — when we have a right go, when the atmosphere is electric, hostile.

"It'll galvanise my players, certainly. We'll be going to win the game with our strongest possible team, and I want to give the fans an occasion to be proud of.

"We know Everton have a world-class team with world-class players and if they're at their best it's a difficult afternoon for us. (But) that's the beauty of the FA Cup."

Portugal's Silva is under increasing pressure with Everton in mid-table when many expected them to challenge for the top six after significant investment.

Silva also potentially represents an opponent who may not recognise the competition's value as Harris so clearly does.

"Growing up, I loved watching the competition and Match of the Day and watching the finals," Harris added. "To play in one myself and have good runs is magical.

"This competition has been good to us (as a club). We are really proud of that. We have not been in the top division since the late '80s and we have to enjoy success where we can.

"Our good cup runs always come in the FA Cup. Prize money, the opportunity for the players to play in front of the TV cameras and a sold-out Den. It is special."