The American prodigy Christian Pulisic is a major doubt for Chelsea’s PL clash with Manchester City on Saturday as the technically gifted star continues recovery from a hip injury.

The USA international could not play in his country’s fixtures versus Canada and Cuba over the international break, staying in the British capital instead.

USA manager Gregg Berhalter said ahead of those games in the CONCACAF Nations League: ‘Christian is officially at this stage ruled out.

‘We just got that information. This was a collaborative decision with the club looking after the best interest of the player.’

The 21-year-old star was substituted in Chelsea’s last game, the 2-0 win over Crystal Palace in the league, which head coach Frank Lampard played down at the time.

‘The only frustration is he comes off with a bit of an injury,’ said Frank. He was going to be subbed before he scored his goal, he’s got a bit of a hip issue, but I’m hoping it’s not too bad because the way he’s in full flow at the moment is great to see.’

Christian has been in superb form of late for the Blues, scoring five goals in his last three PL matches including a memorable hat-trick against Burnley.

The Sun are reporting that he won’t be available for the trip to the Etihad Stadium on Saturday, although Chelsea are yet to confirm this and Frank may be tempted to risk one of his form stars against the champions.