Man City have an article on their website which lists the 24 academy players that Pep has given debuts too. Apart from Foden and Eric Garcia they have mostly played one or two times for Man City and their debuts were all in the EFL Trophy or Cup and that is it. Five are currently on loan including Doyle and McAtee, the rest have left Man City. Cole Palmer has actually appeared in 6 games in the Premier League this season amassing a total of 89 minutes. None of the under 23 squad have played a single minute of mens football and non have been on loan. Imagine they are released, as many will be, and they are as clueless about defending as McAtee was when he arrived at United there would be little chance of getting a contract with a Championship or Lower League club.
It is harsh but I predict neither Doyle of McAtee will ever play for Man City in the Premier League.