In the long interviewed he released to famous German magazine Kicker, legendary manager Sir Alex Ferguson talked about how good he thinks Jurgen Klopp's impact on Liverpool has been: "He did a really good job, and refreshed the enthusiasm in the club. Great clubs can happen to experience that kind of trouble. During last two seasons, due to managerial role changes, Liverpool went on without establishing their own identity. Now you can feel how this year they are there with their force. Klopp is a strong personality, who is very valuable in a big club, almost vital".
Source: transfermarketweb.com