I don’t know what world you are living in, but the manager has bent over backwards for this player, and that kindness and gentleness has not been rewarded at all.I don't know what world you all live in. But in the modern world when a manager publicly calls out an employee, its not to "challenge" that employee to do better. A manager has to give his appraisal one to one personally to the employee. if that doesn't work you bring in the HR who then deal with the employee. This is the civilized way to dealing with such issues. Neanderthals might disagree with this approach but this approach just works across all big organizations.
Employees who have had so much special treatment and repay that by failing to turn up on time, or performing to the requisite level, can and should get called out. And thIs calling out was pretty gentle too. The player’s whiny “poor me” response has been pathetically unprofessional really.
I feel sad for EtH that he has wasted so much time and energy on this player, and I feel sorry for the player that he is unwilling to even pretend to try to take advantage of the astonishing opportunity he has been given: to be a star at the biggest club in the world. What a waste all around.