Plessis has been at Anfield for two years, after joining the club from Lyon in 2007.
The France Under 21 international has now been handed a new two-and-a-half-year contract.
Plessis has been at Anfield for two years, after joining the club from Lyon in 2007.
The France Under 21 international has now been handed a new two-and-a-half-year contract.
