Errol Spence has warned that should Terence Crawford beat Jeff Horn, he will be targeting the WBO World Title.

On June 9th, Crawford steps up to Welterweight for the first time to challenge Horn in Las Vegas, live on BoxNation.

One week later Spence makes the second defence of his IBF crown against mandatory challenger Carlos Ocampo in Texas.

A bout between Crawford and Spence is high on many fans' wish-lists, and while 'The Truth' plans on eventually facing Crawford, he believes he has business to take care of within Al Haymon's stable first.

"Let me clean up my side of the street...with Al Haymon and Showtime. Then I'll come over and take over that side and block too. That's what I'm doing," he told FightHype at a recent media workout.

"We got Danny Garcia and Shawn Porter. We had Lamont Peterson. We had Keith Thurman, but he's doing whatever he's doing right now."

Later this summer Garcia and Porter are set to clash for Thurman's old WBC belt, which he had to vacate due to ongoing injury issues.

Spence hopes to face the winner of that bout towards the end of 2018, meaning a mouth-watering unification with Crawford would have to wait until next year.

"If he does get the belt from Jeff Horn, you know I'm coming to take that belt too, because I want to be undisputed Welterweight Champion of the world," added the 28-year-old.

Speaking about next week's fight, Spence is confident that Crawford will triumph, and doesn't believe Horn's size will make too much difference: "Me personally, I have Terence Crawford winning. Jeff Horn is rough and rugged and he comes to fight.

"I don't think size is going to be a factor. He's a big guy, but Terence Crawford is used to sparring bigger guys. I see Crawford using his movement, boxing, using angles, trying to outpoint him."

Buy BoxNation to watch Terence Crawford v Jeff Horn on Saturday 9th June.