But they do have half an eye on a future opponent - the winner of Keith Thurman v Shawn Porter, on June 25.
Sheffield’s IBF world champion won his belt by beating Porter in August 2014.
But Porter has triumphed twice since then, including a points win over Adrien Broner, and disputes the WBA welterweight title with Thurman in New York.
Matchroom tweeted that “SpecialKBrook will have his eye on the winner!”
Thurman plans to use the same game plan that Brook used to defeat Porter two years ago.
Meanwhile, American boxer and commentator Paulie Malignaggi believes Brook is the best welterweight in the 147 pound division.
Malignaggi said he rates fighters by how he’d expect them to perform against their main rivals and says: “I think Brook beats every welterweight in the world.”
He said a fight with retired megastar Floyd Mayweather would have been a tough one for the American: “Kell is in his prime, he is young, he is hungry, very skilled, very powerful,” he told EsNewsReporting.com
n Sheffield middleweight Sam Sheedy is to fight Andrew Robinson at the Magna Centre, Rotherham on July 30.
They have similar records - Sheedy is W16 L1, Robinson is W18 L1.
Trainer Glyn Rhodes said the fight could be made as a Commonwealth or British title eliminator.