Welterweight world titleholder Errol Spence Jr. (22-0, 19 KOs), who impressively knocked out Kell Brook on the road in England to win the belt on May 27, likely will make his first defense in either December (at Nassau Coliseum on New York's Long Island, where he was born) or in January at Barclays Center in Brooklyn, New York, a source with knowledge of the discussions told ESPN on Thursday. No opponent has been set but two names under discussion are former world titleholder and New Yorker Luis Collazo (37-7, 20 KOs), who scored a big win when he knocked out Sammy Vasquez in the sixth round in February, and secondary titlist Lamont Peterson (35-3-1, 17 KOs), who outpointed David Avanesyan to win a second-tier title in February.