Richardson was part of the West Bromwich Albion team which famously beat relegation in the 2004-05 season.
"I have been in this position before and I am confident in my team-mates," said Richardson.
"It was one of the greatest moments of my career to play in that West Brom team that survived. We were well out of it at Christmas, so it was a massive achievement. Hopefully I can do that with Fulham as well."
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