Edwards kicks off his time in charge with a clash against Crystal Palace on Saturday.
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And Tchatchoua told the club's website: “Everybody knows this match is very important for the team.
“I think it can change the season for us because after one victory, the spirit, the confidence, all these things can be with us.
“This match is very important. Everybody knows this and we all work very hard this week to be ready for this match.
“It’s like a domino effect. We know that if we win one, then we can keep adding more and more victories with time.”