People forget this kid is only 20. It's hard for people to put that in perspective sometimes because we was so good at 18 and 19, often times being one of, if not the, best players on the team. As another poster said, there are natural development hurdles. Modric wasn't even making his Spurs debut until he was turning 23. This kid has another 2-3 years of development ahead of him before we start to see anything approaching the shape of the finished article. And even then you wouldn't expect him to really be showing signs of completeness until he was 25 or 26.
The change in system hasn't suited him at all, because it's largely reductive in just focusing on his physicality. His strengths were never his physicality, and it is a shame such a premium is being placed on that when he has so much else to offer. That said, forcing him to develop that side of his game will only help him in the long run to be a better player. But we absolutely need to take the long view on this and look to develop him over a multi-year period because he is a top, top talent.
I am a huge fan of Kobbie and his ability. I think our CM options are extremely poor for the system we are playing and what are trying to accomplish. If we had a proper, top level box to box physical midfielder, then I think Kobbie could start most games alongside him and be very effective for us right now in this system. The issue we have is that his deficiencies when it comes to this system are magnified by the fact that the rest of our midfielders have similar deficiencies. Amorim has gone for experience in that position, and what he considers his best balance but I think it is a huge shame he isn't being given an extended run in the team so he can grow into the position; because I have little doubt he is our best CM.
Whatever happens, we cannot afford to write this guy off, freeze him out, and potentially lose him. We will absolutely regret it. If loaning him out so he plays for the rest of the season is necessary, then I think that's what we do. I want this kid tied down to a long term contract, and I want to see him on the pitch. He will continue to develop his all round game and physicality by playing more. So Loan him out as part of agreeing a new long term contract, and let him play and develop.