Judging by his IG post, it just goes to show the immense pressure these players are under, and how much mental health and being comfortable in your environment can dictate, almost as much as raw talent, your likelihood of success.
Who knows what his command of the English language is. How comfortable he is here off the pitch. All of this before the immense challenge of adapting to the unique factors of the Premier League
He's shown enough to see there's something about him. Whether he comes good will be the combination of a number of factors, both on the pitch and off.