Yes. I get the logic, I just dont think it makes any sense. Boston isn't trading a #1 pick for a single extra year of Hayward when they could have the #1 pick and 4 years of Hayward.
1. Boston wouldn't do that if they think they just outright sign Hayward.
2. If Hayward wanted to go to Boston, it's in part due to their assets they have so why would he want to handicap his future team? I dont think the 5th year is that important to him if he wants to go to Boston, and if it is, he would just stay with Utah.
3. If Boston does get Utah, I have a feeling it will be because Boston tells him they are going to use the #1 pick to get Paul George, forming a super team. So them trading the #1 pick to get Hayward seems unlikely because it would take away from what I believe (would potentially) attract Hayward to Boston.