The Leeds head coach believes his job at Brentford created the toughest part of his career.
The current Leeds boss said: “[The game against] Doncaster was hard. In football, definitely my hardest challenge. But we did eventually overcome it because of the morale we had at the club.”
The challenge Rosler is referring to is when Doncaster took on Brentford on the final day of the League One season in 2013.
The Bees had a penalty in the dying minutes of the final day of the season, but they missed it - blowing their chances of promotion in the process. Rovers proceeded to run down the other end of the pitch, and scored the goal that took them to the Championship - and handed them the League One title.
However, the Bees did overcome their issues, winning promotion the year after the Doncaster affair - having also lost that year’s play-off final.
It it this kind of squad mentality that saw Brentford take the Championship by storm, and Rosler is known for creating at the teams he is in charge of.
If he can impose some of the same style at Leeds, they will be in a good position to utilise the impressive strength of their squad, and start fighting to win promotion to the Premier League.