RB Salzburg and Liverpool reached an £7.25million deal agreement for Minamino just last week for a January transfer.
The 24-year-old showcased his talent in both match RB Salzburg played against Liverpool in the Champions League group stages.
Minamino also scored in the exciting 4-3 defeat for RB Salzburg at Anfield last October, leaving Klopp impressed with his performance.
The deal already was agreed, Minamino will officially be announced as a Liverpool player on January 1st.
Liverpool are looking to complete their transfer deals as soon as possible with a large number of fixtures set for the new year period.
Klopp will be delighted to have another attacking option in his team after a tough December period.
The FA Cup will start again in January this campaign, allowing Klopp to make more changes to his starting line-ups.
Minamino joined RB Salzburg from Cerezo Osaka in 2015 for a £720,000 price.
He has gone on to make 199 appearances for the Austrian club and scored 64 goals.
The Japan international has already scored five goals in 14 league appearances this season including six assists also.