Jadon Sancho that he risks wasting his talent if he does not grow up.Sancho was fined by the DFL last week for breaching lockdown guidelines in order to get a haircut.The 20-year-old branded their decision an "absolute joke" on Twitter but deleted the tweet a short while later.Back in October, Sancho was fined £86,000 and dropped for one match by Dortmund after returning late to the club following international duty with England.