Freddie Roach made the headlines when he claimed Manny Pacquiao used to regularly knock Amir Khan out during sparring in the United States.
The pair trained together in Los Angeles back in 2014, and Roach told Sportsmail: “Manny frequently put Amir on the floor, knocking him cold four or five times.”
Now, Irish welterweight Dean Byrne – one of Pacquiao’s former sparring partners – has shared his own experiences.
Byrne told Sky Sports: “I didn’t see it myself. Khan was all over the place on many occasions and everybody at the gym knows it.
I heard stories that he was asleep on the floor. I have heard that. Khan’s chin is just like that.
“He is a great fighter, a great athlete, a super boxer, his hand speed is so fast. But his chin? He hasn’t got a good chin. You can’t put muscles on your chin.”
Pacquiao has been linked with an extraordinary super-fight against middleweight Gennady Golovkin.
The Filipino would have to go up two weight classes to make the bout happen, but Roach says it’s a possibility.
Promoter Bob Arum has warned Pacquiao against taking the fight, however, saying: “It’s a stupid fight. I know Golovkin appears to be over the hill, but it’s a fight that could be very dangerous for Pacquiao.
“He isn’t even a welterweight really, let alone a middleweight. His best fighting weight is 140, at 147 I think he’s pretty much outsized by all the good welterweights.
“I know he fought Keith Thurman, who had lost his desire to fight and had been out so long, but he would have a real test against Terrance Crawford or Errol Spence, guys like that. Maybe he could beat them, I don’t know. He thinks he can, but to go up any higher would be silly.”
Meanwhile, Khan has ruled out a return to the ring while fans are not able to attend shows due to the coronavirus pandemic.