After sneaking into the play-offs on the final day of the season, Millwall dispatched all before them in the end of season shoot out, returning to the Championship at the second time of asking.
The Lions will enter a league which promises to be extremely competitive, and the unpredictability of the division will leave fans and pundits alike scratching their heads during the 46 upcoming round of fixtures.
Last season previous year relegation candidates stormed to the uppers reaches of the league before promotion via the play-offs, and former Premier League sides Blackburn and Wigan were consigned to a year in League One.
Manager Neil Harris will know the task of keeping his side in the division is a daunting one, and this summer will provide a strong indication as to whether or not the squad possesses enough depth and quality to compete at the higher level.
The side from east London have two proven strikers in their line-up, and it is expected that Lee Gregory will continue his goalscoring form in the second tier.
Steve Morison has consistently scored goals for Millwall, but approaching his 34th birthday, will the pace of the Championship prove too much for the veteran?
Goals are obviously key to survival, but a sturdy defence is what will keep this team in the division.
The Championship is a whole new level of football, and with devastating sides like Norwich and Brentford in the division next year, Millwall could be out of games before half time.
Bringing in new defensive personnel needs to be a priority for Harris this summer, and bolstering that back line will keep them up.
The Championship is extremely competitive this year, and Millwall are the weakest side to be promoted this year.
It’s going to be a slog, but if Harris can bring the right men in, the Lions may just scrape survival, but it’ll be very close.