I think Carvalho will come straight into first team reckoning. Kid is a top class talent.
This Doak kid looks super interesting to me. I made the point in the other thread, I like the look of him more than Kaide Gordon or Musialowski. Both of those are talented, but simply don't have the physical ability to make any first team impact at the moment.
If you're a teenage attacker, you're either outrageously skilled or you have pace to burn or built like a brickhouse. Difficult to make an impact as a teenager otherwise. This Doak kid looks physically far more ready than any of the other kids we presently have at the academy. Celtic have given him a couple of first team appearances, and I can see Klopp bringing him into first team training at the very least quite quickly.