Rumours surfaced this week that the Lazio Primavera prospect was not 17, but in fact 41-years-old.
"The boy has been shaken up by these unexpected rumours," Diego Tavano told FootballPlease.
"I don't understand why there's been so much talk.
"If all this talk continues then we will take legal action against anyone who keeps persisting with this rumour.
"Joseph is a great prospect for Lazio."
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