His replacement Adrian's arrival coincided with a calf injury to Alisson inside the first half the current season with the Brazilian going on to miss 11 games.
He told the Liverpool Echo: "When I moved over to Belgium, the first couple of weeks, I was in a hotel and organising things, trying to move and the first time when Alisson got injured, I was in my hotel room, filling in some documents, when I suddenly realised that my phone had about 20 or 30 messages.
"I didn't know what had happened because I didn't have Sky in my room. So then I saw that Ali as unfortunately injured. At the same time, I knew that could be the case because he had come back from a long season with the Copa America and of course there is always a risk.
"I chose to leave not for that because even if I had played [in Adrian's place] 10 or 15 games, you know when Ali gets back with what he has proven and the level he is at, he will always go back to the starting XI.
"Even if you play 15 games and keep 15 clean sheets in an unbelievable manner, you would still go back to the bench and that is not the thing I wanted to do at the age of 32.
"I knew that was a scenario that could pan out, but I still would have made the same decision I did today."