The Brazilian was coached by the Argentine during a loan stint at Espanyol.
The gifted attacking midfielder spent six months on loan at Spanish side Espanyol in his Inter days, with the Argentine trainer at the helm at the La Liga club in 2012.
Coutinho scored five goals in 16 appearances for the Barcelona-based outfit and added to his burgeoning reputation as a result.
Since leaving Inter to move to Anfield, the South American schemer has continued to get better and better, with most ranking him as one of the best creative midfielders in the Premier League.
Coutinho has spoken out about his sojourn in Spain and heralded the impact that Pochettino had on his development.
“It helped me, the style in Spain when I went to Espanyol,” he told The Daily Mail.
“And Mauricio Pochettino, who was the manager there at the time, gave me a lot of confidence. He always encouraged me to play and show my skills.
“And he told me to enjoy it. In that sense I have been lucky with all my managers. They have all encouraged me to play my game.”
Liverpool have been without Coutinho of late due to a niggling injury but will hope to welcome him back to domestic action for this weekend’s clash with West Brom.
The Brazilian is a crucial player for the Reds, with the 23-year-old playing a key role in linking the Liverpool midfield and attack.