Thry need a goalkeeper and that is always their main problem, I have seen that sometimes even with top defender on your side there is no guarantee how things will turn however if they got a handy of defender alongside a top goalkeeper than that would be the best choice for their problem
No I think the goal keeper is good enough. Loris Karius in a good goal keeper, better than Mignolet for me. The problem is in Left Back. Moreno always inconsistant and Milner back up him good enough, but Liverpool can't always play Milner in that position, that is out of his regular position. Liverpool Really need a new leftback in January.