The reigning Premier League champions beat Chelsea to the signing of highly rated Jacquet, 20, for a reported fee of £60 million, including add-ons.
Jacquet won’t link up with Liverpool until the summer, however, after Rennes insisted he remains at the club until the end of the season.
Speaking ahead of Liverpool’s game against Man City on Sunday (February 8), Slot admitted he’s already looking forward to having him in his squad.
"Very pleased, of course, because first of all, he is a very big talent - and maybe even more than 'only' a talent, but we speak about talent because of his age, of course," Slot told reporters.
"Second of all, because we weren't the only ones interested in him. So another big compliment for the people that are working every single day, so hard, to sign players that we were able to sign such a big talent.
“It is another example of the model we are using at this club. Young, very talented players, sometimes at the start of their careers, sometimes already a few years in, but always players that are young and can improve us and help us for the short but definitely also for the long term.
“We've signed a lot of them recently and I've said many times that the mid-to-long-term future, but even the short-term future, of this club is in a very, very good place".