The forward completed a move to Liverpool from Southampton on Tuesday.
Liverpool manager Juergen Klopp
Mane completed a move from Southampton on Tuesday after the Reds made him a priority signing this summer.
They have paid big money for his signature, with the potential for the deal to cost them as much as £38.5 million in future, according to the Telegraph.
Sadio Mane celebrates after scoring the second goal for Southampton
He becomes Klopp’s fourth signing of the summer, having already agreed deals for Mark Grujic, Loris Karius and Joel Matip.
And according to his comments after Mane completed his move, he is a player that the German has been watching for some time.
“I have followed Sadio for a lot of years since his impressive performances in the Olympics in 2012,” he told liverpoolfc.com.
“[I] then watched his development in Austria and in his time at Southampton. Since I came here I have spoken to the staff a lot about him and have always felt he could be a very good signing for us.”
Southampton's Sadio Mane in action with Crystal Palace's Pape Souare
Klopp will now be hoping that Mane proves to be an astute signing for them given the money that they have paid for his services.
Liverpool are expected to be challengers for a top four place next season under his leadership and they will need their summer signings to hit the ground running if that is to happen.
A bonus for them is that Mane is a proven Premier League player and they will be keen to see him replicate the form he showed during his time at Southampton.
Sadio Mane celebrates after scoring the first goal for Southampton