On Monday night it was confirmed that the Anthony Joshua fight against Kubrat Pulev (25-1, 13 KOs) had been called off, due to a shoulder injury to the 36-year-old Bulgarian.
Joshua has not fought since he and Wladimir Klitschko went through 11 rounds of heart-stopping, hard-hitting boxing in April.
The 28-year-old Olympic gold medallist maintained his 100% KO record in a memorable night at Wembley Stadium.
Joshua was planning to defend his WBA 'super' and IBF heavyweight titles against the experienced Pulev.
The veteran Bulgarian was the IBF's mandatory challenger to Joshua's throne but reportedly damaged muscles in his right shoulder during a sparring session last week.
On Monday night, rumours were circulating that Joshua's fight - in just 12 days - may be scrapped entirely.
However, the 70,000 fans who had bought tickets will still watch the Londoner in action at the Principality Stadium in Cardiff.
Boxing promoter Eddie Hearn swiftly took to social media to confirm the man who has already agreed to step in as Pulev's replacement.
“I received a call from Kalle Sauerland late afternoon to inform me that Pulev had injured his shoulder and maybe ruled out of the fight – this was later confirmed by his doctor,” said Hearn, as per boxingscene.com. “IBF rules state that the mandatory will go to the next fighter in line which is Carlos Takam."
"When the Pulev fight was announced I made a deal with Takam's team to begin camp and be on standby for this fight.
"When I called them this evening they were overjoyed and good to go. It's a difficult position for AJ - having prepared meticulously for the style and height of Pulev, he now faces a completely different style and challenge in Takam.
"This hasn't happened in his career before but he is ready for all comers on 28 October."
Takam is rated at No 3 with the governing body and has been on the hunt for a showdown with the British star.
The 36 year-old Frenchman boasts an impressive record of 35 wins, three losses and a draw.
Also taking place on a huge night of boxing on October 28, Dillian Whyte will face Robert Helenius as Joshua's undercard for the WBC Silver strap.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: https://www.givemesport.com/writeforgms