Sry for the late reply mate, was really busy this week and did not have enough time for Steemit. He is indeed ! The progress that the team has made since he took charge is considerably big. Keita will be fantastic but as you have remarked they do need another central midfielder, preferably an attacking minded one as they have not bought in a replacement for Coutinho yet.
We'll have to see what happens with Can, there are now strong rumours that he will stay. It will be very important for The Reds to resist any offers for Salah, as it would be almost impossible to find a suitable replacement, and it won't look good on Liverpool if they do sell, especially after just one season.