Harrison, 38, added that he is not interested in fighting WBA heavyweight champion and fellow Briton David Haye.
"No disrespect to David Haye, but no-one is talking about David Haye, " said Harrison, an Olympic champion in 2000.
Contrary to David Haye, Dereck Chisora really went for it and really tried.
"I don't think it's a good idea for him to fight David Haye, " he told BBC Radio 5 live's Victoria Derbyshire show.
London's former cruiserweight world champion David Haye, who made an impressive heavyweight debut against Monte Barrett last month, was ringside in Mannheim.
The 28-year-old, who lost his WBO title to David Haye in March 2008, continues his comeback against Ola Afolabi for the interim WBO cruiserweight belt.
What would happen against Britain's David Haye or Russian Nikolay Valuev?
It had been expected WBA champion David Haye would seal a unification fight with Klitschko but this ends his hopes of meeting the 34-year-old in April.
"I was never going to let the loss to David Haye be the end of my career, " said Maccarinelli, who has 28 wins from 30 pro fights.
Westwood came fourth in the public vote, with diver Tom Daley sixth ahead of cyclist Mark Cavendish, winter Olympian Amy Williams, cricketer Graeme Swann and boxer David Haye.
Gavin also drew inspiration from David Haye's capture of the world heavyweight title in Nuremberg last weekend, seeing that win as an example for all young British fighters.
Klitschko's boxing career is nearing an end, but he holds out hope that British fighter David Haye will end his short retirement and agree to a bout next year.
Former WBO champion Maccarinelli was hoping to continue his rehabilitation following his unification defeat to David Haye at the O2 Arena 12 months ago, where the Swansea showman lost his WBO crown.
It was Rees's first defeat in 28 professional bouts and compounded a bad month for trainer Enzo Calzaghe, whose WBO cruiserweight champion Enzo Maccarinelli lost his title to David Haye a fortnight ago.
Meanwhile, Klitschko said he would flip a coin with his brother to decide who will fight Britain's WBA champion David Haye, if Klitschko defeats Sosnowski and Haye defeats John Ruiz on 3 April.
Britain's WBA heavyweight champion David Haye hopes to take on Wladimir Klitschko in July before meeting his brother Vitali - the WBC champion - in the Londoner's final fight before retiring ahead of turning 31 in October.
Calzaghe senior will be looking after Lockett and Doherty on the bill along with Kerry Hope and Hari Miles, the whole show sandwiched between Enzo Maccarinelli's clash with David Haye (8 March) and Joe Calzaghe's with Bernard Hopkins (19 April).
The line-up in this series included former Coronation Street actress Helen Flanagan, boxer David Haye, Made In Chelsea star Hugo Taylor, entertainer Brian Conley, Conservative MP Nadine Dorries, former Doctor Who Colin Baker, actress Linda Robson, and darts legend Eric Bristow.
BBC: Charlie Brooks wins I'm A Celebrity... Get Me Out Of Here!
应用推荐