Nobody is suggesting a team full of kids - even when fergie won it with his "kids" in 1996, the spine of the team was formed of experienced pros.
Starting with a couple of kids (from the likes of Nacho, garcia, Roberts, maffeo) and getting 1-2 more on as substitutes is not asking for much, is it? It would in fact improve our chances of victory against what would be a tired Everton, and give a few of our first teamers a much needed break.
If our manager can't see that, or can't win a single match without playing our main stars, well, simply means we need a different manager.