Saying in the Spring of 2016 that you won't be back after the 2018-2019 season isn't exactly a "OMG" moment.
-If i was him, i'd play the "i won't be back" card and see what shakes out with Pep and the team.
-he may just be playing hard ball for $$$ or may want to see what things will be like.
Either way coming out 2+ years early and saying that he won't return, doesn't hold weight.
(and if it's getting serious, and seems to still be the deal NEXT summer, we will sell him. You don't let him go without a return)