The Englishman moved from Arsenal to Anfield for £30million in 2017 and enjoyed a strong first season. However, a cruciate ligament tear limited him to just two Premier League appearances in his second campaign.
After recovering, he did play his part following the rest of his spell at the club but never quite seemed the same and was affected by further injury problems.
He would go on to move to Turkey with Besiktas before his free transferswitch to Parkhead in January.
The man who signed him, Klopp, was sure the ex-England star would "go through the roof" before that devastating injury.
Speaking on the That Peter Crouch Podcast, he said: “But we all know Bobby (Firmino) was there obviously but the other two we had to buy other really good players, Oxlade.
“So they always gave us an extra something. Ox, with his dynamism, with his speed, without the injuries, Ox would have gone through the roof 100%.”