Anthony Joshua believes Tyson Fury is the opponent who could cause him the most problems and has claimed he could knock Deontay Wilder out with one shot.
With WBC heavyweight champion Wilder, WBO belt holder Joseph Parker and former champion Fury all keen to fight him, the stage is set for a blockbuster 2018 for WBA and IBF king Joshua.
All four men are undefeated but, while bouts with Wilder and Parker may soon be in the offing, the path to a fight with Fury is more difficult.
Fury has not fought since dethroning Wladimir Klitschko for the WBA, IBF and WBO belts back in November 2015. He does not have a boxing licence and is still awaiting the resumption of a UK Anti-Doping hearing after allegations were made against him.
Joshua's fellow Briton has also struggled to stay in shape in his absence, but the 28-year-old still feels Fury has the skillset and the mindset to trouble him more than Wilder and Parker.
Asked who would be the most difficult opponent of the three, Joshua, speaking courtesy of Jumeirah Hotels & Resorts/Sports Tonight, said: "Fury. He’s just awkward, tall and I think he's a bit of a nutjob to be honest with you.
I think he's just got a bit of a screw loose. Any man with a screw loose... they just have a little something that you can't put your finger on. So with Fury it would be tricky to figure him out.
"I think I know what I have to do with Wilder. Parker, I don't disregard him but... I'd smack Parker around the ring, no problem.
"Wilder, I'd knock Wilder out. It would take a bit of time but I'd definitely knock him out. Parker would take a bit more of a pasting but I'd get to him. Wilder, I'd knock him out with one shot. Not like I'd go in there and bang but when I catch Wilder, I'd definitely knock him out.
"And Fury would be a real breakdown job, a real gruesome type fight. Kind of like that Klitschko fight – I'll go to hellfire and back to get the win."
Joshua was knocked down in his 11th-round win over Klitschko back in April, while Fury emerged relatively unscathed from his unanimous decision triumph against the now-retired Ukrainian.
However, Joshua said of Fury's performance: "Boxed 12 rounds and ran. I don't respect that.
"If I'm the King of Dubai in the olden days and a different empire comes to take my territory, you don't come and steal my treasure – that's what Fury done I think. He stole the boxing from Klitschko in the sense that he just boxed and moved - I know it's the art of boxing, but...
"I always said that you come to slay the King. You look him in his face and you take what's his. And that's what I think me and Klitschko done. We came together man to man and just went to war. And I think that's relit the division as well."
|Messi is not a leader, he is no Ronaldo, claims Petit|
|Better than Ballack? Hodgson backs Loftus-Cheek to shine against Panama|
|Svitolina and Garcia suffer upsets|
|Walker responds to Ferdinand criticism|
|Djokovic still hungry for more after reaching major milestone|
|Ellis drop goal earns Castleford dramatic win|
|Nigeria hero Musa unsure on Leicester City future|
|X marks the spot - Granit´s rocket sets World Cup first|
|Xhaka and Shaqiri follow the script as Serbia are derailed|
|Chandimal appeal against ban rejected|
|Real Madrid sign teenage goalkeeper Lunin|
|Serbia 1 Switzerland 2: Shaqiri strikes late to clinch crucial comeback victory|
|Suspended Srna joins Serie A side Cagliari|
|Cilic sets up Kyrgios showdown as Djokovic reaches milestone|
|Kudla up next in Federer´s Halle ´fight´|
|Assistant Farbrace to take charge of England for T20 games|
|Hummels hoping to be fit for Sweden clash|
|Hend surges clear as Fleetwood struggles again in Pulheim|
|Giant-killers Mexico embrace sudden weight of expectation|
|Roma complete €17.25m Kluivert deal|
|Pakistan name strong group for Zimbabwe tour|
|Choc Horror: Boullier insists McLaren do not hand out Freddos as bonuses|
|Neymar: Not everyone knows what I went through|
|Poland v Colombia: No time to dwell on regrets, warns Aguilar|
|Musa shows Messi how it´s done to set up critical Argentina showdown|
|Nigeria 2 Iceland 0: Musa brace boosts Super Eagles & Argentina|
|McLaren and Renault open to Ricciardo talks|
|We must win, we have no other choice - Maaloul|
|Germany will respond against Sweden, insists Low|
|´The best among all Asians´, South Korea trust in Son against Mexico|
|Stalin´s bunker an unlikely site for Russia´s World Cup charm offensive|
|England v Panama: Rashford tipped to start as Southgate´s side aim for last 16|
|Erasmus wary of ´wonderful´ Cipriani|
|Hummels to miss Germany-Sweden, confirms Low|
|Murray accepts Eastbourne wildcard|
|St Petersburg madness lines up Neymar and Brazil with heroes of the past|
|Martinez happy to be ´boring Belgium´|
|Japan v Senegal: Squeaky clean Group H rivals eyeing huge step towards last 16|
|Argentina team the worst in history - Ardiles|
|Ravanelli upsets wife by taking Arsenal job...in Kiev|
|Federer moves a step closer to 10th title in Halle|
|Brazil 2 Costa Rica 0: Coutinho and Neymar score in stoppage time to snatch win|
|Andersson: Sweden embracing big occasion as bug sweeps through team|
|LeBron in ´good dialogue´ with Cavaliers|
|Ronaldo will always be the best, Fonte claims|
|Southgate criticises press for England team leak|
|O´Mahony: Series win in Australia would be up there with Grand Slam|
|Khedira thrilled with Can capture, staying with Juventus|
|Samuel open to Higuain-Icardi swap deal|
|It´s just a game - Milligan disappointed by Kruse criticism|
|From drug-testing lab to gastro pub: Sochi happy not to forget dark past|
|Ronaldo will do what is best for him, says Carvajal|
|Kohli: India will feel at home in England|
|Barca target Lenglet yet to decide future|
|Germany perform best under pressure, Klose claims|
|Juanfran signs one-year Atletico Madrid extension|
|Julian Nagelsmann: The remarkable rise of RB Leipzig|
|Sterling: my daughter is Liverpool through and through!|
|Van Bommel to take charge of PSV|
|Hansen urges France not to ´squeal´ over decisions|
|Intelligent Jones will turn England´s fortunes around - Moody|
|Nainggolan confirms imminent Inter transfer|
|U.S. Open missed cut may be blessing in disguise - McIlroy|
|Schmidt in no rush to decide on his future|
|Wallabies treating decider as grand final - Hooper|
|Salah won´t leave World Cup, Egypt FA boss claims|
|Chandimal, Hathurusinghe and Gurusinha admit ´serious´ conduct breach|
|Mikal Bridges´ 76ers dreams dashed in dramatic draft twist|
|They want to pull you down - Sterling hits out at tabloid press|
|Lazaridis wants West Ham to stick with Mexico star Hernandez|