I agree, as already said it is a possibility only if another winger comes in, Son/Kulusevski and the third lets say Pepe. You dont pay 60m to keep a player on the bench, and Son and Kulusevski are well before Perisic in quality hierarchy.Perisic as super-sub is a great fit, I'd be very surprised if we're looking to ship him out, we're thin enough up front as it is.
He's not really part of our future, but no need to rock the boat of something that's working.