Chris Forsberg breaks down the three potential reasons why Gordon Hayward might not just pick up the contract option on the final year of the 4 year deal he signed with the Celtics back in the summer of 2017. Honestly this is why I always write how I hate player options as a fan. It basically means the contract is only the full length if the player ends up becoming a shell of his former self or is injured. While on the flip side if they do well they hold all the leverage before that final season.
In the case of Hayward he hasn't lived up to expectations in Boston, but he isn't a "shell of his former self" nor is he toast due to injury.