Henry used Klopp as an example of a how difficult it is for modern coaches to yield instant results.
Speaking in an interview with L'Equipe, Henry said: "I'm not talking about myself, but in general, people these days want someone to be able to develop a legacy over a very short period of time... That is not impossible.
"Look at Jurgen Klopp. I do not compare myself to him but he is an example that I am using because he is in England and I covered that for TV [for Sky Sports between 2014 and 2018].
"When he arrived, it was said that everyone was getting injured because people are not aware that the team was used to training in a certain way.
"And then, you change everything to adapt to your game because Klopp really likes pressing [players], there were a lot of hamstring injuries.
"And we also saw the team often concedes a few goals in the last minutes of play...
"It took six to eight months to adapt. After that, you have to look at who can play in your system... Now everyone says: oh Liverpool, but it took three and a half years, even for a great manager.
"He didn't do that (winning the 2019 Champions League in particular) in three months or even in two years."