I've read on some websites that CP3 won't retire, I'm cheering to the Suns to bring reinforcements next season, and I sincerely hope CP3 gets his ring and also takes the first title to the Suns.
Before he went to the Suns, he is in the Thunder and carried the team literally because no one really expected them to go into the playoffs but he did the impossible.
Now he got traded from a team which didn't experienced any playoffs for years but have promising players like Ayton and Booker. He literally changed the whole team and its the first time of the Suns to go to the NBA Finals after years of drought.
He has at least 2 years still to get a title and for sure he will stay on the Suns. The only thing that the Suns lacked in the Finals was a big. Saric and Kaminsky are both injured at that time and they don't have any other but Ayton. With how the Suns played in this season, I'm thinking that they will be a team to be reckoned with because they are a strong team. They will come back next season and will enter the playoffs again.
Who will forgot Bobby Portis contributions? he is a crowd favourite in Milwaukee now. Pat Connaughton outside shooting is also a big help for them. And he is also a very tough defender and good rebounder.
The crowd favorite Portis

. He didn't played that much in the playoffs until Giannis got injured and that is the time for him to shine. Helped his team, boosted their morale and have a big contribution especially in their last game where he got double figures. When Holiday and Middleton are having an off-night, he stepped up. Regarding Connaughton, he is a high-flyer, a good rebounder and a good shooter. Overall, the Bucks have a good supporting casts.