It was previously reported that due tot he deal with Netflix the Defenders characters can’t appear in any other films or TV shows for two years following their cancellation.
Given that Jessica Jones is airing a third season in 2019, her character would be out of the running for the supergroup The Defenders until 2021.
In the meantime, we know Disney+ is working on a handful of shows set in the MCU, which would focus on characters like Falcon, The Winter Soldier, Scarlet Witch and Loki.
This would mean the earliest that the Man without Fear or the Heroes for Hire could show up would be in late 2020.