Need to have:
CD
AW
Nice to have:
CD
CM
ST
GK
I have to say that I am overall fairly convinced that Klopp - if shown the needed support from the board - will not make as many mistakes on the market as we have been accustomed to of late. It's inevitable that some signings will not turn out but his hit ratio will be better than what we've seen in a long while, is my bet.
A new, influential and commanding central defender should be on top of our list come January - we need to bolster and fortify our back and I don't think either of Sakho (mainly down to injuries) and Lovren (lacking stability, still to many schoolboy errors) has proved they are solid enough to be trusted upon in the long run. Skrtel is Skrtel, full of heart, commitment and stability, but not a leader. His best spells has come alongside a more commanding presence. I believe Klopp could be thinking New CB + 1 of our current lot. And as indicated I wouldn't even be surprised if he was looking to bring in two new faces for that position.
I also believe we are severely lacking an Attacking Winger/Forward type with goals to his name and both pace to burn and ability to leave defenders stranded. Don't get me wrong, I have since the first few glimpses from back when he was still at reserve level rated Ibe immensely and I still do. He will eventually be better than Sterling, is my call. However, he is young and still rough around the edges, so if Klopp wants to improve our attacking width and power - without running him into the ground (as we did with Sterling at some stages during Rodgers tenure) - we need someone to improve us from day one-ish. A player like Griezman would fit that bill perfectly but there are others and the Bundesliga would not be a bad place to start looking.