Apparently so but don't know about any other player. Barcelona just have too many wannabe superstars and not enough actual quality. De Jong is the last good player they bought, Griezman was just a waste of money and so was Coutinho and the injury-prone Dembele.
There are news articles that they'd be willing to let Messi go as they don't want him to be unhappy at the club but I doubt he'd actually leave. Koeman has come in and rightfully identified that Griezman has been played out of position and wants to fix that, which probably means a bench role for Suarez. We'll see but there needs to be massive changes, especially with their defence if they're to compete.