Jurgen Klopp has consistently been told throughout his Liverpool reign - by pundits, fans and former Reds stars - that he must bring in a top-class goalkeeper.
For a long time, Simon Mignolet failed to convince as the number one and was eventually dropped to the bench.
When Klopp confirmed in January that Lorius Karius was his new first choice 'keeper, it was a move which was not exactly met with widespread approval by Liverpool fans.
The 24-year-old had previously failed to impress when given the chance and made a number of high-profile errors.
But Karius vowed to prove himself capable of being Liverpool's long-term No.1 - and he has done just that in the last few months.
The German has impressed to such an extent that talk about needing a new shot-stopper has died down.
He was again solid against Porto on Tuesday night as Liverpool booked their spot in the Champions League quarter-finals with a goalless draw.
It was a sixth clean sheet for Karius in the UCL - the best record of any goalkeeper in this season's competition.
It's an impressive sta which suggests Liverpool may have found their new long-term number one. What do you reckon?