New signing Ryan Tunnicliffe believes Millwall can shake off the bookies' beliefs and emulate the likes of Barnsley and Burton Albion in becoming an established Championship outfit.
The Lions are one of the favourites for the drop straight back to the third tier in 2017/18, but the 24-year-old believes that spirit and togetherness will be key factors as the club look to join the list of teams that have won promotion from League One and remained in the second tier beyond one season.
"It all starts Friday," Tunnicliffe said. "The gaffer has told me we like to play and like to press high and give it a real good go. Anything is possible if everyone pulls together - look at teams like Barnsley and Burton Albion.
"The first month will be crucial to get a feel for it and hopefully get off to a great start. You can carry the momentum from coming up last year, too.
"Bigger teams will probably underestimate us, especially in the first half of the season, because they won't know what to expect. I'm sure teams will sit up and take notice when we start getting results and start doing well.
"The Den will be important for us this season. We need to make it hostile and make sure teams don't like coming here."
The former Fulham midfielder spent most of the summer break out of contract - and along with himself, Tunnicliffe stated that he has a point to prove to Millwall boss Neil Harris.
"Millwall showed a lot of interest in me. They'd done their homework on me and it's nice to be wanted. I need to repay the gaffers' faith and prove a point to myself and show everyone what a good player I am.
"I've said all throughout my career that I need to score more goals. I haven't really set myself any personal targets, but I'm sure if I keep getting forward and keep breaking into the box then they'll come."