If I was this lad's Dad, I would have real concerns about him playing top level senior football at this age.
Physically, he is nowhere near. He suffered an ankle injury recently, from a robust, but fair challenge by the Leicester centre half, who was 3 times the size of him.
He has all the skill and brain etc. but he will never win a 50/50 ball and will more likely get hurt.
Let him train with the first team, but he Needs to play competitively with his own age group for at least 2 years.
It just doesn't look fair or right.
Diaz's stocky build makes him look more robust and able to ride the challenges, but both look to be needing 5-6" more height
You can’t put a player’s technical development on hold while he grows into his adult self, otherwise you lose out on the potential he has. Rather, as Pep has done, you give him consistent tasters of what life is like in the very top flight...and all that that means, including a good thump every now and then.
He will either grow 4 inches or he won’t, but we know for a fact that at his current height, he can be world class. From here, it is all about development of his technical ability (which is stellar), his mental attitude (which appears to match his technical ability) and his physical maturation (which cannot not be rushed, only nurtured).
I don’t think Foden is complaining about the opportunities he is being given, nor do I think Pep is unhappy with the cameos he has played. That’s a win-win for Man City Football Club and Man City fans. I can see him as a regular substitute and an almost certain Cup team player next season. When you think about the age of the team that finished that game, it is unreal. Putting Stones, Laporte, Zinchenko, Bernardo, Foden, Diaz, Sané, Jesus into the CL team is incredible. Throw in the experience of KDB, Silva, Aguero and the youth of Ederson and Sterling, and you have a world class team of average age about 23-24!! Bring in a couple or three players this summer in the 22-25 age range and we will have a young squad that could really do a number on all fronts for years to come. The Project is coming to fruition, and ththe results so far are outstanding!