Floyd Mayweather claims that, if he wanted to, he could earn as much as $1bn by agreeing a three or four-fight deal to come out of retirement and test his skills in the octagon.
Live coverage as West Ham United host Arsenal at the London Stadium looking to shock another of the Premier League's top sides.
United looking to bounce back after suffering defeat by Manchester City, while Bournemouth need a win to distance themselves from the bottom three.
Manchester City thrash struggling Swansea to set a new mark of 15 successive top-flight victories as Serge Aurier and Heung-Min Son secure a 2-0 win for Tottenham over Brighton.
Dominic Solanke's disallowed goal was the major talking point as West Brom held Liverpool to a goalless draw at Anfield.
Eden Hazard can be replaced and Chelsea should not fret if they lose the Belgium marksman, says Marcel Desailly.
Andres Iniesta has provided a positive injury update 10 days before the first El Clasico in La Liga against Real Madrid on 23 December.
Rafael Benitez could have £30m to spend to improve Newcastle's fortunes after Amanda Staveley's takeover took a step closer to completion.
United trail Manchester City by 11 points but Valencia insists they still believe they can overcome the gap.
Toffees boss Sam Allardyce signed Dutchman Van Aanholt for Crystal Palace for around £14m in January, and has confirmed his desire to recruit a left-back next month.
Mourinho took offence at City's celebrations after their 2-1 win over United at Old Trafford on 10 December.
West Ham United defender James Collins says he will be included in the Hammers squad for tonight's clash with Arsenal.
Borussia Dortmund will not cash in on Pierre Emerick-Aubameyang during the January transfer window amid interest from Liverpool and Everton.
Barcelona captain Andres Iniesta has encouraged his club to sign Liverpool's Philippe Coutinho and Palmeiras' Yerry Mina during the January transfer window.
Chelsea star Willian has ruled out the possibility of leaving Stamford Bridge in January amid speculation linking him with Manchester United and Barcelona.
World number two Roger Federer does not expect to repeat his 2017 performances in the new year as he anticipates the return of Novak Djokovic, Andy Murray and more from injury.
Amiri is noted for his versatility and is also capable of playing on the left wing if required and has scored four goals this season.
Atletico Madrid full-back Sime Vrsaljko could leave Spain in January and reportedly favours a move to Napoli despite Liverpool's interest.
Manchester United striker Zlatan Ibrahimovic has labelled Manchester City boss Pep Guardiola immature over the way he handled himself at Barcelona.
Former UFC heavyweight champion Bas Rutten believes Conor McGregor must face Max Holloway in a rematch after the latter's meteoric rise since his last defeat.
Mesut Ozil and Arthur are linked with a move to Barcelona. The World Cup winner with Germany and Gremio starlet are also reportedly wanted by Manchester United.
"Australian Open, Wimbledon and US Open are cornerstones, everything which lies between we'll take it from there," Federer said.
Real Madrid boss Zinedine Zidane was coy when asked about recent reports claiming that Los Blancos are set to sign Kepa Arrizabalaga from Athletic Bilbao.
Goals from David Silva and Nicolas Otamendi gave City a 2-1 win over United and extended their lead at the top of the table to 11 points.
Barcelona have been urged to make a swift decision on whether they want to sign Yerry Mina from Palmeiras during the coming January transfer window.
Stan Wawrinka and Novak Djokovic will feature for the first time since Wimbledon at the Mubadala World Tennis Championships in Abu Dhabi where a Rafael Nadal meeting is possible.
Leon Bailey has scored five goals and assisted four in 13 games across all competitions for Bayer Leverkusen this season.
Lewis Hamilton has no plans to retire from Formula 1 in the near future. The Briton's current Mercedes contract runs until the end of 2018.
Mesut Ozil has been linked with a move to Manchester United and Barcelona as he nears the end of his Arsenal contract.
Tyson Fury has been cleared to fight again after he accepted a two-year backdated suspension from the UKAD. He proceeded to call out Anthony Joshua soon after.