I'm a massive fan of Grujic.
I think he's the opposite of a lot of our young midfielders over the last few years (Stewart, Brannagan, Rossiter, Chirivella et al) in that all of those guys were neat and tidy with nothing flashy in their lockers.
Grujic is more like a young Gerrard, in that he can play the 40 yard pass, play the one two, get forward and score thumping headers or 30 yard rockets. To play in a Klopp team, which values hard work and quick transitions, Grujic needs to work on those aspects of his game a little more. Once he gets there though, he'll be absolutely beastly. I'm actually a bit more confident he'll make it at Liverpool than I am about Origi.