That’s how I see it.
Griffin is a 2-FOR-1, in the sense that even after acquiring Hayward, we would need to trade or find a PF upgrade. Adding Griffin gives us a legit #2 scorer AND a big upgrade at PF/C (also rebounding with Zizic included too).But Hayward seems more likely to leave his current team than Griffin IMHO.
Plus Griffin’s injury history and attitude (trainer incident, punching a wall, etc.) may not reflect well either.Hayward also is an ELITE WING SCORER and is versatile (can play anywhere from 2-4 depending on situations), and plays UNDERRATED defense (not elite like Kawhi or Draymond, but above average).
DOES NOT hurt you on the defensive end at all. Where people criticize IT for scoring 30 points a game BUT giving it back on the defensive end, Hayward can score 25 PPG and NOT give it back on the defensive side of the ball.
This postseason, his defense elevated even more IMHO just watching the games, and can only get better. I’m not saying we’re guaranteed Hayward but my guess is:
65% Hayward Stays Utah
25% Goes Boston
10% Goes Miami
For Griffin:75% Griffin Stays LAC
15% Goes Boston
10% Elsewhere (Maybe OKC)
BUT if Chris Paul LEAVES, then the odds are probably close to 45-50% he goes Boston, and probably just 25% he stays (and he could legitimately consider his hometown, OKC, and I'm sure OKC would try to work it out somehow).
I wonder if Griffin would be willing to take just a 3-year Max. That could be beneficial to both sides too. Griffin could seek another big deal after the 2-3 years as long as he plays at a high level.
I'd say Gordon Hayward is Plan A, Blake Griffin Plan B. (Hopefully there's no need for a Plan C). 
What do you guys think?
If BOTH Hayward and Griffin are willing to leave and come here, who do you sign
(since you CLEARLY can't sign both).