McGregor will walk away with his reputation intact after putting up an accomplished showing in his first professional bout against Mayweather in Las Vegas tonight.
Mayweather stopped the Irishman in the 10th round with McGregor looking leggy.
But the 29-year-old believes the referee Robert Byrd called time on the fight too early.
“I took the early rounds fairly handy,” McGregor said.
“I thought it was close, I thought the stoppage was a bit early, there was a lot on the line and I thought he should have let me carry on.
“I was just a little fatigued. He is composed and you have got to give it to him.
“I thought it was close. I get a little wobbly when I’m tired, it is fatigue, the referee could have let it keep going, let the man put me down. I am clear headed.
“Where were the final two rounds? Let me wobble to the corner and make him put me down.
“I’ve been strangled on live TV and came back. When you’re in here in the squared circle, everything is different.”
On the potential to get back in the square ring, the Irishman added: “We’ll see what happens. I am having a buzz, if anyone wants a knock give me a call.”