Jadon Sancho, the Manchester City teenage prodigy, who has barely been at the club since the first team squad returned from their pre-season tour of the US a month ago, has left his club baffled after failing to turn up for training.

Telegraph Sport reported last month how the England Under-17 winger, who is coveted by a host of leading clubs, had failed to turn up for numerous training sessions in Manchester after being omitted from Pep Guardiola’s tour squad.

But the situation has escalated in the weeks since with Sancho on a collision course with City after failing to turn up for training for much of August.

Sancho has been sporadically retweeting posts on his Twitter account but staff at the club have routinely struggled to get in contact with him.

City regard Sancho as one of their brightest academy prospects alongside midfielders Phil Foden and Brahim Díaz. But while Foden and Díaz were both included on City’s tour of the US, Sancho – who is still a scholar and has not signed a professional contract – was omitted by Guardiola after indicating that he wanted to leave the club.