Striker and top scorer Gignac, who has 11 goals to his name this season, addressed the subject of his own future by claiming Bielsa remaining at Marseille would have a big impact on his decision to potentially renew a deal that expires in June.
Bielsa took charge at Marseille in May and has overseen a resurgence for the nine-time Ligue 1 champions, who head the French top flight by a point from arch rivals Paris Saint-Germain.
The Argentinian has a two-year contract with the Provencal club that reportedly contains a release clause after one year, and the former Athletic Bilbao has evidently already won the hearts of his players.
Despite Gignac's glowing reference, Bielsa remains non-committal.
"It is difficult to ensure that the coach will stay long in one place," he said at his pre-match press conference ahead of Saturday's meeting with Metz.
"There is phrase from Jorge Valdano [former Argentina international and Real Madrid coach] that says 'I work as if I was going to stay all my life knowing I can go tomorrow'."