Black is coming very close to the point of no return in my opinion.
There's little doubt that he has the potential to be a very talented and successful professional footballer playing at a higher level than just now.
However, there is serious dount whether he has the attitude and temprement to ver acheive that potential.
The excuse that he is young and immatue is begining to wear just a little thin. He now has considerable experience of playing in the first team but his immaturity and infantile petulance seems to be getting worse if anything.
I don't know whether he is being properly mentored at the club but ultimatey he is now a grown man and, as such, responsible for his own actions.
I believe that the next half seaon will go long way to deciding whether he acheves his potential or not. He is a very fortunate young man to possess the natural skills he so clearly has but he is at great risk of his career sliding backwars rather than progressing to the heights he might otherwise attain unless he grows up and soon.