In 2007, Chagaev pulled out of a unification bout against then-WBO champion Sultan Ibragimov.
Both repeatedly won the most prestigious heavyweight boxing championships, such as WBC, IBF, and WBO.
The Coatbridge super-featherweight will fight WBO champion Roman Martinez in Glasgow's Kelvin Hall on 4 September.
Hopkins said before the fight he'd like to face WBO light heavyweight champ Nathan Cleverly.
Keith Thurman won the WBO intercontinental welterweight title with a 12 round, unanimous decision over Jan Zaveck.
Edinburgh's Arthur, 30, will make the first defence of his WBO super-featherweight crown at the MEN Arena.
Khan will fight on the same bill as Alex Arthur's WBO super-featherweight defence against Dagenham's Nicky Cook.
Calzaghe then defended his WBO belt for the 19th time with a unanimous points victory over Sakio Bika.
Vitali Klitschko is the current WBC heavyweight champion, while his younger brother Wladimir owns the IBF and WBO belts.
Elsewhere, American Kendall Holt retained his WBO light-welterweight title with a split decision over Demetrius Hopkins in Atlantic City.
Kristjansen, ranked as the world's number two lightweight by the WBO, has won 19 of his 23 previous fights.
Maccarinelli hopes to fight for the WBO cruiserweight belt early next year.
Cook is making his second world title tilt after last summer's unsuccessful bid to dethrone WBO featherweight champion Steve Luevano.
Burns, 27, will challenge undefeated Puerto Rican Roman Martinez for the WBO World super-featherweight crown on 4 September in Glasgow.
Cook was due to challenge Harrison for the WBO featherweight title but the Scot pulled out at 48 hours' notice.
The Cefn Fforest man, 23, faces Karo Murat for the WBO interim title in Birmingham's LG Arena on 18 September.
The 30-year-old has held the WBO super-middleweight belt since October 1997 when he beat Chris Eubank with an emphatic points decision.
Khan faces Denmark's Kristjansen at Bolton Arena on Saturday in a fight that has been billed as a WBO title eliminator.
And Maccarinelli's promoter Warren suggested that the Welsh cruiserweight was ill-prepared for his WBO interim title shot in Manchester on Saturday.
Swansea's Maccarinelli, 28, had hoped to be fighting for his old WBO cruiserweight title but had a string of opponents pull out on him.
However Khan, ranked number two with the WBO and five by the WBC, said the 25-year-old would provide a real test.
Dereck Chisora's bout against IBF and WBO heavyweight champion Wladimir Klitshcko will be shown on a big screen in the 11, 000-capacity arena.
Haye holds the WBA version of the heavyweight crown, while the Klitschko brothers between them hold the WBC, IBF and WBO belts.
The world number one is currently 36-year-old American Nate Campbell, who recently beat Juan Diaz for the WBA, WBO and IBF titles.
Donaire, the WBO super-bantamweight champion, received the prestigious Fighter of the Year award from the Boxing Writers Association of America on Thursday.
In December last year, he offered to fight WBO heavyweight champion Enzo Maccarinelli, but the pair never really looked like coming together.
This time Puerto Rico won out as Daniel Santos beat the Margate-based Iranian Takaloo to unify the WBO and WBU light-middleweight titles.
Nelson has seen off 13 previous challengers for his WBO belt since stopping Carl Thompson to take the title in March 1999.
"I could make a few WBO defences or go on to face the likes of Tavoris Cloud and Chad Dawson, " said Cleverly.
The recognised world titles at the weight are held by Jean Pascal (WBC), Tavoris Cloud (IBF), Gabriel Campillo (WBA) and Juergen Braehmer (WBO).
BBC: Nathan Cleverly helped to title by leaving Calzaghe gym
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