The guy plays a sport that he loves for a living. Is rewarded with huge amounts of money that will secure his own and all his loved one's futures. At Goodison, he walks out onto the pitch to the roar of 40,000 passionate and doting spectators. He's been offered a pay packet worth an annual £5,000,000 a year. He's turned it down and can't, as of yet, put it down to Everton not being ambitious.
He's put himself into a situation, where he's turned down a contract at Chelsea, the home of the English Premier League Champions, refused to sign for Everton and if all goes well can add another 2 to 3 million a season by pocketing his transfer fee, or a huge proportion of it, at the expense of his boyhood club.
I've got to say "I'm an empath and a soft hearted person". But when people start blaming the situation on his mental health, they're clutching at straws. Are those people hurt, confused, and in no small way protecting their own feelings?
It may not be Barkley who's pulling the strings, but I can guess the brotherly advice is not far from the source, of "the world according to Lukaku". Amongst others. He's had his mind changed by stronger people than himself. What we are seeing is the result of that change. What seems odd, is Barkley seems confused. He's not mad. I do believe, he is definitely either unintelligent, easily led, or is affected by the glory he's witnessed first hand, that money would seemingly have to offer. He's a sheep in amongst the wolves in sheep's clothing.
For what it's worth, my opinion where his intelligence is concerned is. He's inarticulate and not stupid at all. but is easily led.