Adonis Stevenson has regained consciousness after three weeks in a coma following a December 1 knockout loss.
Canadian boxer Adonis Stevenson is in a stable condition under controlled sedation.
Thai boxer Wanheng Menayothin clinched his 50th straight victory on Wednesday.
The trash-talking Wilder is set to be among a crowd of 78,000 at Principality Stadium.
Tyson Fury is determined to “be myself” and avoid playing “a character” should he return to the ring.