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Pep Guardiola has sprung the first surprise of his Manchester City reign … by including a 20-year-old goalkeeper in his first squad.

The new Blues boss will not have Joe Hart available for his first match in charge, at Bayern Munich on Wednesday night, as he will report back late for training after his involvement in Euro 2016.

But with Willy Caballero already back working at the City Football Academy, and being joined by youngsters Ian Lawlor and Angus Gunn, it seemed like Guardiola was well covered in that area.

Billy O'Brien is a lifelong Blue who has been in the City academy since the age of ten, and was sent on loan to Hyde a couple of seasons ago.

But Guardiola has now asked the Wales under-21 keeper to cut short his pre-season preparations with City's youth set-up in Croatia, and will take him to Germany and on to China.

O'Brien flew out to Croatia with the youngsters on Wednesday but that plan has already been altered.

He was offered another year on his City deal but with stiff competition from England under-21s' Gunn and Ireland under-21s' Lawlor, he looked like the outsider.

But he has been chosen to travel, and tweeted his delight, saying “Back home from Croatia early. Amazing couple weeks ahead” followed by emojis of the German and Chinese flags.

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