50 CENT's violent reputation has been questioned by British pop singer Lee Ryan, who insists the rapper "is not tough at all".

The former boyband star is certain his south east London upbringing was more violent than the rapper's Queens, New York City childhood, and challenges the singer to pay a visit - if he dares.

Ryan says, "I don't think much of that 50 Cent lot. I met him recently and he's not really that tough. Not tough at all.

"They don't scare me. They want to come down my area then they'll see what rough really is."