West Ham and Newcastle United have been linked with the £25m-rated forward.
After victory over Caen, Plea said: "There is a good chance that I'll leave. It's something I've considered with the club for a while.
"I can have a good exit. I think I'm ready enough to go somewhere else, I think I'm going abroad. There were discussions with the club. And I think next season I will not be at the club anymore.
"We will see the next transfer window."