re: Crackpot ASOIAF Theories SPOILERS

Jon is infected with greyscale during the journey on to Volantis when rescuing Tyrion from drowning in the Rhoyne, but keeps it a secret.

When Jon reveals to the high commanders of the Golden Company that the young man with him is actually Prince Aegon Targaryen the men greet his announcement with silence. Connington realizes they know, as Harry Strickland had told them already.

Upon learning that Daenerys Targaryen remains in Slaver's Bay, the Golden Company, under Aegon's direction, decide to invade Westeros instead because the time is ripe.[18] Jon, Aegon and the Golden Company land in the Stormlands and take several castles, including the Connington ancestral keep, Griffin's Roost. They next plan to take Storm's End, where Aegon will raise the standard of House Targaryen above the battlements.[16]

Jon is plagued by guilt over the Battle of the Bells and hears the tolling of the bells every time he closes his eyes. He knows that with greyscale death is coming for him, but hopes to live just a few more years to end the Robert Baratheon's line and put Aegon on the Iron Throne. Jon Connington believes if he can achieve this it will finally stop the tolling of the bells and he can die content in his home of Griffin's Roost.

from Westeros

I know I read somewhere that 2 actors were cast for roles but the characters weren't assigned. Maybe with that and the Nicolai "duck" spoiler they may show up.

Even though Lena did a stoneheart picture and she never showed up. Who knows