Amir Khan is contemplating retirement from boxing after admitting he is losing love for the sport in the wake of his loss to Kell Brook.

Brook defeated Khan in Manchester on Saturday, securing a sixth-round stoppage in a highly anticipated grudge match between the British rivals.

A sixth career loss – and third defeat in his last six fights - left 35-year-old Khan in a reflective mood.

He bravely battled on when under constant attack from a dominant Brook but was ultimately soundly beaten.

"I've had 40 fights, winning two world titles, fighting in America and around the world," Khan said to Sky Sports. 

"I need to sit down with my family. But it is more towards the end of my career.

"The love for the sport isn't there anymore and, in the ring, I didn't have excitement and that push. That's maybe a sign that I should call it a day. But let's see."

Khan added at the post-fight news conference: "The first time I felt like this was when I fought Bud [Terence] Crawford. I felt like I just can't get in the groove. I thought maybe it was just because he was that good. 

"But [against Brook] I tried and I just couldn't really get in the groove.

"It's something to think about it, definitely. I've always said I don't want boxing to retire me, I want to retire from boxing before it does that. 

"Punishment like that, sometimes in boxing - I know I showed a big heart and took some big shots - but sometimes too much of that can be harmful in the future.

"I've done more than I ever expected. Maybe I peaked too early in my career, I was at the Olympics at 17, I won the world title at 22. 

"I want to spend time with my kids and my family. I want to be there for my family, I want to take them to school and be that father.

"I'm 35 now, I've been in the game a very long time, I'm an old man now."

Kell Brook career record

Brook, meanwhile, felt the Khan camp had embarked on mind games. After hitting a 49lbs catchweight imposed by Khan, he was forced to change his gloves in the ring just before the action got under way.

"I had to put different gloves on," said Brook. "He said he wasn't happy with my gloves.

"In the final moment in the ring, they said they wouldn't pay me unless I put new gloves on. We did all his demands and there were the weight issues.

"I dealt with everything. They did it all week. They tried to get in my head. To poke at me. I even had someone knock on my hotel room door at 3am this morning to disrupt my sleep!

"But I took care of business."

Ultimately, though, the rivals embraced in the ring after the fight.

"I've always had respect for him," explained Brook. "But when I didn't get it back? It's hard to like someone.

"But he took shots and tried to hold on. I respect him for that. He said we can get a coffee after!

"I've always wanted to have the fight with Amir - this grudge match is the icing on the cake for me. I can live at peace with myself, with my career now."