Brook, who suffered the first defeat of his career to middleweight Gennady Golovkin, saw hopes of a domestic showdown with Amir Khan come to a halt after talks broke down.
Spence Jr's trainer Derrick James told Sky Sports at the beginning of the month that travelling to the UK for the bout is "not a problem at all" for his fighter.
Spence Jr was part of the USA team that came to London for the 2012 Olympic Games, but he missed out on a medal by losing in the welterweight quarter-finals.
this is a fight im really looking foward to, lets take a look at the highlight reel of both fighters below.
Kell Brook 36(25)-1(1)
Errol Spence Jr 21(18)-0