I think the saying failure to prepare will prepare you to fail, from the clips he looked out of place , like he did not belong. That shows he was not mentally prepared to face whatever was there to be encountered. Talented will get you in doors but your work ethic and desire to succeed is what keeps you there.
Professionalism is a lifestyle , how you think , eat, tackle situations , carry yourself. The first thing clubs need to do back hope is change the culture of its organization, because you are setting up these your men to fail by just sending them out there on just talent alone. Talent is abundant , heart is the 2% that make it.
Another thing is football is a brotherhood, these players have enough men back home to enquire of the culture they about to enter into. It can't be that hard to pick the phone and make a call to a Sancho. a Hyland and get some advice. Today's generation is a different breed but like generations before, those who commit to succeed invite guidance while others grasp at the rope after they begin to fall.