Zlatan never talks about his future.
But at the same time his agent likes to act on his own.
So we may never know before anything is official.
Just to keep in mind, his agent Mino Raiola is also the agent of Nedved. Raiola apparently got furious because Nedved wanted to stay, which meant Raiola gets paid much much lesser.
Raiola is just a selfish bitch so even how much you hate Zlatan, don't take the words of his agent too serious.