Former WBO heavyweight champ Herbie Hide has been jailed for 22 months after he admitted selling cocaine.
Hide was the victim of an undercover operation by The Sun on Sunday newspaper.
The former champ saw his sentence reduced at Cambridge Crown Court due to entrapment by the newspaper. High profile crime reporter Mazher Mahmood met Hide in January and February.
Hide has previously been convicted of criminal damage, battery, threatening behaviour and carrying a knife.
His lawyer though said: "I hesitate to say this, but it is a case of Jekyll and Hyde - far from his public persona, he is a shy man and a vulnerable man and was ripe for the picking by experienced and professional men like Mr Mahmood.
"I’m not here to criticise the paper for its conduct but this is not a case where the Sun has in any way unearthed a massive conspiracy. This was not a case of crime fighting or exposing a criminal, this was a case of selling newspapers."