Blanc signed a two-year deal after being installed as PSG boss last summer and has guided the Parisians to the summit of Ligue 1 in his first season in charge.
And with a successful defence of the domestic crown looking likely – Blanc’s men are five points clear at the summit after 26 rounds – and progression into the Champions League quarter-finals all but secured following their 4-0 first-leg thrashing of Bayer Leverkusen, Silva believes now is the time for Qatar Sports Investments to offer the former France coach fresh terms.
Silva told L'Equipe: “It is important the coach feels good and valued at this club.
“If he does get an extension I hope he invites us all to dinner to celebrate the event.”
Blanc played for Montpellier, Auxerre, Barcelona, Inter and Manchester United in a glittering playing career that culminated in successes at the 1998 World Cup and Euro 2000 with France.
In his first coaching role, he led Bordeaux to the 2009 Ligue 1 title before taking over as les Bleus' boss in 2010.