Don't get your hopes up bro. Hearn/Joshua has the leverage so you better believe they'll ask for an 80/20 split at least and he'll have to fight in the U.K. That's a given. They'll expect Wilder to jump through hoops even if it's after Joshua's mandatory. It will almost be like Mayweather/Pac all over again on negotiations.
Just to show you how much of a snake Eddie Hearn is, Sky Sports invited Wilder to be a guest commentator last night and he agreed only if he could get a face off in the ring afterwards. Sky agreed to his terms and then called back a few days later and said they couldn't so that's why Wilder DIDN'T show up last night. Hearn threatened Wilder with extra security and even a restraining order and then when interviewed last night he called Wilder out for not being there and even talked trash. Pure snake.
The fight will definitely NOT happen this year and I'd be surprised if it happens before 2020 because if not, Joshua can fight a nobody and the Brits are dumb enough to fill 80k capacity stadiums because they think he's the greatest. I think Wilder knocks him out if they fight, crap an over-aged Klitschko even floored Joshua. Parker even hurt him with a body punch in the 11th last night.