Wouldn't it be pretty obvious that Kemba has far higher trade value then Hayward?
Hayward was once an All-Star. But then he signed a max contract deal during which he:
1. Missed the entire first season to injury
2. Had a thoroughly mediocre second season after returning from injury (not his fault, but trade value isn't sentimental)
3. Came back well his third season, but still could only manage to be the 4th best player on a team that many would argue is only a fringe contender
4. Got injured again during the playoffs, which may further impact his value depending on if he returns against the heat (and if so, then how well)
5. May have had his value further impacted by the rise of Smart during these playoffs, which may now push Hayward back to being the FIFTH best player on a fringe contender
All of this will, combined with the fact that he's being paid well beyond his statistical production, will likely hurt his trade value quite a bit. HOWEVER....Hayward when healthy is still a very good player who has a lot going for him:
a) He's a good sized wing who can handle the ball, make plays, and can play multiple positions on both ends of the court
b) He's talented scorer who can give you 20 points on any night, yet really doesn't care for the spotlight or demand X amount of touches
c) He's a great locker room guy who minimal ego who will do anything to hurt team chemistry
d) He's still relatively young, so if a team can get him to commit then they should be able to get a good 4 or 5 productive years out of him
I think Hayward has a fairly specific market, as most teams by now see that he's no more then a #3 option at this point. This means he probably makes the most sense for a team that already has it's franchise star just needs to give them some quality veteran support - teams like the Bucks, Pacers, Lakers, Sixers, Suns and Kings could probably all take a big step forward by adding guy like Hayward.
Kemba I think has a much larger market. He's a perennial All-Star who hasn't averaged under 20 PPG since the 2014/15 season. He's well known for being probably one of the top 2 or 3 ball handlers in the league. He's a tough guy who has been very healthy for most of his career (this is only the second season in which hes played less than 73 games) and isn't afraid to play through niggling injuries. He's the rare star player who is great in the locker room and who isn't afraid to sacrifice his numbers to help make other guys around him better. These are the kind of traits almost any team in the NBA would love to have.
And despite the emergence of Tatum and Brown (and the scoring load they took on) Kemba still managed to average 20 / 5 / 4 - which proves he's still perfectly capable of being a #2 option on a good team (or even a #1 option on a mediocre team). He's shown he is effectively the Kyrie Irving without the headaches - and there was no shortage of teams out there willing to offer Kyrie a max deal this past offseason despite his issues. Likewise I can guarantee if Kemba hit the FA market tomorrow, there is no question he'd get a max contract from somebody.
Unlike Hayward, Kemba's trade market would be...pretty much any team out there who needs a good PG. He'd fit on young upcoming teams, he'd fit on fringe playoff teams wanting to take the extra step, he'd fit on good playoff teams who want to make the push for a title - he'd fit pretty much anywhere.
Could you imagine...
- How deadly the Lakers would be with Kemba / Lebron / AD?
- How much better Philly would be if they dumped Simmons + Horford and moved forward with a core of Kemba / Harris / Embiid?
- How good the Bucks could be if they had Kemba drawing defensive pressure off Giannis?
- How much upside the Pelicans could have with a core of Kemba / Reddick / Zion / Ingram / Favors?
- How good the Mavs could be with a core of Kemba / Doncic / Porzingis?
I think the potential market for Kemba would be pretty big - way bigger then it would be for Hayward. And that's BEFORE you take in to account the fact that Kemba is locked in for 4 years (versus Hayward's ability to walk in a year).
IMHO trade value between the two is not even close - Kemba's would be way higher.
But...I think for Boston, trading Kemba would likely be a mistake. Kemba might well be the most prolific free agent signing the Celtics have had in a decade. He loves Boston, he gets along great with the other players, he's done nothing but good things for the team and the locker room. He really does bleed green. Trading him one year after signing him would be a pretty dirty move for a franchise that already probably made some player's blacklists when Danny dumped Isaiah Thomas a couple of years back. You don't want to be that team who builds a reputation for having zero loyalty - nobody will want to sign with you.
Secondly, I think Kemba's presence in Boston this year was absolutely instrumental to the emergence of Brown and Tatum - both of whom took significant backward steps last year playing alongside Kyrie. Kemba's trust in those guys, willingness to share the ball with those guys, and ability to draw attention away from those guys are all crucial factors IMHO that allowed them to thrive and take that next step.
Futhermore, the fact that Boston had that three headed monster (Kemba, Tatum, Brown) all averaging >20 PPG is IMO the biggest reason why that have been so difficult to beat and gameplan against - the fact that you can shut down any one of those guys and the other two can still kill you. I am super impressed with how strong a trio of Smart / Tatum / Brown has been...but I'm even more impressed when that becomes a quartet of Kemba / Smart / Brown / Tatum. Smart's defense complements Kemba's scoring and the ability for Kemba/Tatum/Brown to draw defensive attention has helped Smart get and make those open looks. I'm not sure getting rid of Kemba helps this team more then it hurts it.