i think what he is saying is he had 1 season left and then signed another one season meaning he should now have 2 seasons left , a sort of one season extention but all thats happened is he signed for the same 1 year and is no doubt going to announce retirement in the next few days.
i think this is something that needs looking at, maybe have a contract extention option just to see if the player intends on retiring or not when they get to start that final year.