Barcelona want Neymar to bulk up. With a view to helping that, they diagnosed chronic tonsillitis and he had his tonsils removed during the summer.
They've now discovered that he's anemic and are putting him on a special diet with extra supplements - but I won't be the one who makes jokes who makes jokes about his blood passport.
Meanwhile Messi's dad/agent has reportedly started wondering out loud about Neymar's salary. They've denied that they're trying to negotiate a new contract, but as they've always said in the past that Barca simply offer Messi the money he deserves, maybe negotiating isn't required. Though Messi is going to need some extra cash to pay his tax bill/fine.