Twenty-one of those came during the past 2025-26 campaign, which was cut short for the centre-back due to a shoulder injury sustained in February.
Jacquet – a France U21 international – also built up prior experience with 24 outings during a loan spell of around 12 months with Clermont Foot.
The 20-year-old will now get his Anfield journey under way and told Liverpoolfc.com: “I feel really good, the first impressions are good and I am very happy to start here.
“I am very happy. When I see the facilities, I can see myself there. I feel good here and I am very excited to get started.
“For me it’s a big dream, it’s a big club. A club like Liverpool, it’s a big dream for me.”
Jacquet’s Liverpool squad number will be confirmed in due course.