Klopp has mapped out the value of consistent match time for Grujic during a conversation with Critchley.
“A couple of weeks ago we had an in-house game at Melwood and the manager spoke to me and said Marko has made big strides but maybe nobody has seen that because it's not visible, so he wanted him to play for the U23s when the opportunity arises, and feels it is important for his development," the U23s boss told Liverpoolfc.com.
“I have to say, the games that Marko has played for us, he has done very well in. You can see he is a top-class player and what I like about him, and I've not been in his company too many times, is he is a very humble boy.
“He listens and he asks you questions. He has got a really good attitude and he is a good boy to work with, and if we can help him get closer to the first team then that's our job."
He added: “As the manager said, sometimes the development can go a little bit under the radar. He will see that because he is working every day with him on the training pitch.
“Sometimes it might not be as visible to supporters but I'm sure Marko in the future will be a really good player for this football club."