With three of the four heavyweight boxing belts now held by the Klitschko brothers, newly recrowned WBC heavyweight champion Vitali Klitschko admits Nikolai Valuev's WBA belt is a tempting target.
Vitali Klitschko made a successful comeback to the ring by beating Samuel Peter to reclaim the WBC heavyweight title in Berlin yesterday.
Out of action since 2004, the 37-year-old Ukrainian controlled the whole fight and sealed the win when the Nigerian retired after the eighth round.
The win sees him join younger brother Wladimir, the IBF and WBO title-holder, as a world champion.
Vitali Klischko says it would be great if all four titles were in the family's hands.
Russia's Valuev has already said he would be prepared to meet the Ukrainian in the ring and is looking at a voluntary defence of his title in December with Evander Holyfield being linked as a possible opponent.