Richards, 25, missed most of last season with a knee injury and the start of the current campaign with a pulled hamstring but after three appearances believes his problems are behind him.
He said: "I am back fit now and I believe when I am fit and playing I am as good as anyone in the division playing that [right-back] role.
"It's all about keeping going and getting some games in, though I played well in the three games I've had. Brazil would be nice. I've never been. I was supposed to go to a tournament there when I was younger but didn't make it."
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