The funny thing is, he can be a "Barcelona player" – if given enough patience and support, which seems to be in short supply, particularly among the fans. He was never a "Klopp player," but Klopp managed to integrate him into our system, because he had to. When a club has to deal with limited resources, they don't just throw out talents like that – look at Spurs, how Pochettino due to not being able to sign any players had to find a way to use a "flop" like Sissoko or an initially underwhelming signing like Lucas Moura – and did so. Look again at Klopp this season, how he managed to squeeze every bit of value from the fucking Origi and Sturridge.
If Barca fans were willing to be patient with Coutinho, give the coach some space to tweak the system to suit his strengths – they would be rewarded eventually. There is real talent there (same goes for Dembele, who they also want to get rid of, apparently). But they are a bunch of trigger-happy spoiled brats who love to put some players on a pedestal and viciously tear others down and that is going be their weakness and their downfall.