Dereck Chisora has admitted that he doesn't have a game plan ahead of his heavyweight bout with Vitali Klitschko on Saturday.

The 28-year-old also stated that Klitschko needs "to bring out his best game" if he is to defeat the Brit.

"He's got a young fighter, hungry, looking to take his title. And he's going to have to bring out his best game ever," Chisora told Sky Sports News.

When questioned on whether he has a game plan, Chisora added: "I just have to be excited, you don't have to come with a game plan. Enjoy what you're doing in the ring, and everything will come into place."

Klitschko, meanwhile, called Chisora, "very strong, very motivated and very aggressive".

Chisora could become Britain's fourth world heavyweight champion if he can triumph on Saturday.