The 19-year-old striker joined the Merseyside outfit from Lille for a reported transfer fee of £10million last month and was immediately sent back to the Ligue 1 club on loan for the 2014/15 season.
Origi was one of the key players for the Belgium side that reached the quarter-finals of the 2014 World Cup earlier this summer.
The teenager's impressive performances in Brazil saw him linked with a number of top European clubs, including Tottenham, but the striker insists that his heart was set on playing for Liverpool once manager Brendan Rodgers had personally spoken to him.
“I took a lot of time to sign because, suddenly, there were a lot of clubs interested in me," Origi told the Daily Mirror.
"Big Spanish, Italian and German clubs wanted me but my dream was to play in the Premier League. I also went to Tottenham but of the clubs interested, I chose Liverpool.
"The coach alled me often, he invited me over, showed me a compilation of my matches since I was in the Under-15s and knew everything about me.
"At the club, everyone knew me, from the person doing the video analysis to the chef. My father told me to choose with my heart and I chose Liverpool and I don't regret it for a minute."