This wasn't the prevailing view in the summer.It come down to simple things
Do we need that type of player?
The answer is yes and he has proved how good he is in the prem.
As for Liverpool, they bought two average fullbacks, overplayed for a forward and bought a player not suited to their system (whatever that now is)
They wre signing the best young attacking prospect in world football, the 2nd best striker in the league... 2 full backs a majority of our fans considered superior to the ones we had and 5jey were already ahead as returning champions before any of those purchases.
I think.the overarching conclusion one can reach is that prospects are not a sure thing, no matter how good they looked playing in their previous team.