The IBF champion has been forced to wait over the weekend for news on his proposed title defence against Klitschko, but the WBA are expected to announce a decision today on whether their vacant belt will be at stake.
Klitschko is expected to seek an alternative bout if he cannot reclaim his old title against Joshua, with reports suggesting the Ukrainian has put plans in place for a fight against Lucas Browne in Hamburg.
And Jennings, who was beaten on points by Klitschko last year, admits he could be willing to challenge the IBF champion on his scheduled date of December 10 at Manchester Arena.
"I will fight Anthony Joshua sometime in the future period," Jennings exclusively told Sky Sports.
"Upon whatever circumstances we fall upon, December 10? That's possible. I'm going to say that's possible."