Ricky Hatton said he was not going to make any hasty decisions after he was beaten by a body shot.
He said: "I hurt him a few times, and I was winning.
"It was a good shot, I should have realised he was looking for that.
"I suppose that is what three-and-a-half years out of the ring does. I think I did alright - this guy only lost his unbeaten record in his last fight.
"I don't want to make any hasty decisions but I am really heartbroken. I am just gutted. I am not a failure, that is not how my career should end but I have to have a good think about it now."
More top news
A member of FIFA's Executive Committee believes Qatar will be stripped of the 2022 World Cup because of concerns about the soaring heat
Anti-discrimination campaigners have offered their support to Mario Balotelli after he received a tide of racist abuse on Twitter
Nasa's Maven spacecraft enters into the orbit of Mars after a 10-month, 442 million-mile journey.