As BoxingScene.com reported earlier today, former world champion Amir Khan is considering the possibility of accepting a $5 million guarantee to face WBO welterweight champion Terence Crawford.

The fight would take place on March 23 at Madison Square Garden in New York City - and on ESPN Pay-Per-View.

At the same time, Khan has the opportunity to face his longtime rival, Kell Brook, in the first quarter of 2019.

Brook, who returns in a stay-busy fight on Saturday night in Sheffield, was hoping to face Khan next.

Now that contest is in jeopardy - after promoter Eddie Hearn of Matchroom was working on the deal since the start of the year, when he entered into a multi-fight promotional deal with Khan.

But Khan believes there are several upsides with Crawford - including his world title and his recognition as being the best pound-for-pound fighter in boxing by many experts.

Khan believes the contest with Brook can be done at any time - while a contest with Crawford may not be there in the future.

"There are other fights out there at the moment, like pound-for-pound champions, that is on the table for me. And I think that’s a fight which might never, ever come in my lifetime again. The pound-for-pound title is back in the welterweight division," Khan told Daily Express.

“It’s Crawford. Crawford has the pound-for-pound title and I’ve got that fight right in front of me, so I want to take that one. It’s either that or the Kell Brook fight.

“The Kell Brook fight is always going to be there – he's not going to go anywhere. If I don’t fight Crawford, Crawford won’t be there again. That pound-for-pound title might not be there again. The world title might not be there again. There is so much in one fight.”