Sakho, who came through the ranks at PSG, left the French capital to join Liverpool on transfer deadline day earlier this month.
The French international has started Liverpool's last two games against Swansea and Southampton after Brendan Rodgers splashed out a reported £15million to land Sakho.
Boyhood PSG fan Sakho returned to the Parc des Princes for the first time since his move to England on Sunday for the game with Monaco and during an emotional speech he admitted he has unfinished business at the club.
Speaking before the game on Sunday night, Sakho said: "I'm very proud to come here tonight. I remember when I was young, I was up there, there in the stands and watched PSG play.
"I have now turned a page.
"My story with PSG isn't over yet.'