Actually you have no idea what he's said (and neither do I). Lets look at the facts though.
He's barely played the second half of this season despite being fit, and clearly has something going on with Pep. We've been trying to get him to sign a new deal for some time, and he hasn't thus far. But his contract runs until 2021 right!? Well yes, but the club a. doesn't want to let players go into the last year of their deals without having signed a new one, and b. needs to plan for the possibility that we'll get a two window transfer ban starting January. If we go beyond this window without selling, and then have to sit out the next two, we're in the unenviable position of either being forced to give him whatever his agents can dream up to stay, or, oh look, Bayern just signed him on a pre-contract in January 2021. Good deal.