Anthony Joshua has received no response from Deontay Wilder regarding possible April 13 unification fight

Unified heavyweight world titleholder Anthony Joshua's camp has yet to hear back from Deontay Wilder's team about a possible heavyweight unification fight this year.

Joshua (22-0, 21 KO's) is set to fight at Wembley Stadium in London on April 13, but no opponent has been finalized.

Negotiations broke down last year after the WBA ordered Joshua to face Russian mandatory challenger Alexander Povetkin, who he knocked out in seven rounds back in September

Wilder (40-0-1, 39 KO's), the WBC champion, went on to fight former titlist Tyson Fury in a controversial split draw last month and the WBC ordered an immediate rematch shortly thereafter.

Joshua recently told ESPN that he has no interest in fighting Fury. If Wilder is unavailable, Joshua will likely fight either Jarrell "Big Baby" Miller or domestic rival Dillian Whyte, who he beat previously, but knocked out Dereck Chisora in a December rematch.