Now that Parker has defended his title in a mandatory challenge, he is free to fight a voluntary against an opponent of his choice.
There are several options - a unification fight against one of the other title holders would in theory be desirable, but that is unlikely to happen in the short term.
Parker remains on a collision course with WBA, IBO and IBF title holder Anthony Joshua, but that fight will probably be allowed to build in order to increase anticipation.
Parker will probably fight again in December.
The options include: