I think he should stay in Milan because he has achieved something with this team at this stage of his career and I believe it should be memorable for him. But we all know and agree that ibrahimović is a different type of character. So, I am not going to be surprised if he decides to play for any other team. It is going to be interesting to see when he is going to retire considering that he is really old right now.
AC Milan has a good traditional treatment and privilege to their legendary players. They said they give full rights to decide of staying or leaving to Ibrahimovic. I think Ibrahimovic will decide to stay in AC Milan and end his career there.
He has no longer too much time left for his career and in AC Milan, his contribution is well recognized by fans, club director board and he will not leave Milan to find another challenge in the end of his career. Next season, who knows Ibrahimovic will win his first Champions League with AC Milan even he won't be able to contribute a lot for them. It belongs to destiny. Let's see his decision and how AC Milan will perform next season.
Yes, I also believe this player should stay. and the fans also recognize his contribution. sometimes we often see that a player's contribution can get overshadowed by another but this is not the case here.
I believe he will end up staying on the team and he should finish his career with this team. but considering that this is Ibrahimovich we are talking about I am not sure what he is going to do. But if he stays I believe it will be better for both him and the team.