True. Koeman had to do this.
It's bad strategy though.
Meet with Messi, tell him how wonderful he is and how you want to rebuild the team with him at the heart of it but you're going to be making changes to the team, ask him to give it his all for next season and then see where things are. If he decided actually no i'm going to leave because I can't stay here without Suarez then that's on him. No need to disrespect him at the meeting unless he wanted him out anyway.