Heyman said the challenge was for a fight, any time and any place, between Goldberg and Lesnar.
Below is video from Heyman's segment on RAW:
"@Goldberg, you sir are hearby challenged to a FIGHT!! ... One on One ... ICON vs. ICON ... @BrockLesnar vs. GOLDBERG!" - @HeymanHustle pic.twitter.com/cS4GAGGIUK— WWE (@WWE) October 11, 2016