Mane also qualifies for Portugal, though has so far played for England U18s.
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"He's got a really high ceiling, I think because of his mentality, because of his quality and because he's not finished developing yet," said Wolves boss Edwards.
"He can go a long, long way. It's been a really good start for him but that is all it is.
"He's getting a lot of headlines and there's a lot of noise about him, there's not many 18-year-olds in the Premier League doing what he's doing at the moment, especially in a team that's been struggling this season.
"He's made a real impact for us and he has a really, really bright future ahead of him."