Trossard's loose pass against Bournemouth last week led to William Saliba being sent off in defeat at Dean Court. He also missed a penalty in the Champions League win against Shakhtar Donetsk.
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But ahead of Sunday's clash with Liverpool, Raya insisted: "He has a great attitude, I don't think that's going to play on his mind.
"He's a top professional and a top lad. I really don't think that will affect him, he's just got to focus on doing the right things as it's just part of football.
"Everybody makes mistakes so I don't think he will think too much about that.
"He just needs to keep doing what he's doing because he's a top player and he's helped us in a lot of games this season."