LONDON, April 23 (Reuters) - Aston Villa manager Tim Sherwood has warned Jack Grealish about his future behaviour after the teenage midfielder was pictured in a national newspaper allegedly taking nitrous oxide.
Year-old images published by The Sun appeared to show Grealish taking the substance that is described as a legal 'high'.
"I spoke to Jack first thing this morning," Sherwood was quoted as saying by the BBC on Thursday. "I explained to him his behaviour can't be tolerated.
"He is now in a responsible position as a professional footballer. He's got to make sure it won't happen again, he's assured me it won't.