Yes therefore in order to become champions liverpool need to improve the quality of the game. Liverpool defense is still very fragile, in the next transfer window I believe liverpool will buy defender.
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
They have good goalkeeper already, no matter how great the goalkeeper but if they dont have decent defensive players so it will be useless. Look at Manchester United, they have De Gea who is a great goalkeeper but how many goals scored to his net so far?
No doubt David De Gea is the best goalkeeper in the world now. his skill is show off because Manchester United defence this season is so poor but De Gea always save his team to get some point.