Olympic judo star McKenzie is currently single and Harvey claimed that the sportsman would have women throwing themselves at him when he walks out of the Channel 5 show.
"You're going to have a lot [of girls] after you after you come out here," said Harvey.
"Let me know how it goes on the first night. Give me a call and I'll get my security for you."
He added: "Ash, you don't know what's going to hit you bruv. On the next level."
McKenzie revealed to Martin Kemp that he currently still lives with his mum.
Celebrity Big Brother continues every night on Channel 5.
[Celebrity Big Brother Day 4 - Gallery]
Copyright: Channel 5