I get Hayward had a rough year, but most of the guys did, he's just pointed out more because of his contract.
Problem was he was rehabbing the whole year, so his time off from working was less than others. And he couldn't really work on his game to see what he could do, and couldn't.
Look at Jordan when he took the year+ off. When he came back, it was rough on most nights, year he was still better than Hayward most nights, but one, he's Michel #$##ing Jordan and two, he didn't have his foot facing the wrong way a year before.
Jordan took the summer to relearn how to play the game his body would let him. When he came back for his first full season he wasn't the same player he was when he retired. He was still the best, but different than before. More post up fades than driving to the hoop.
I think Hayward needs to do that. He showed too many times that his could still play when he was aggressive and had more touches. Looking at a lot of box scores it wasn't that he was missing a tone of shots, he just wasn't putting them up. Thats a lot to do with Stevens and Irving. Hayward is too unselfish to demand the ball, and Irving is too demanding of the ball.
Trading Brown for cap relief is dumb, a guy who can score and dig down and play D doesn't come around every draft. It's only a couple more years, and last one is player option, and like Horford, if Hayward is playing below top level, he may opt our and take a lesser longer term contract.