The Argentine, who arrived at the Stade Velodrome in July, has guided Marseille to the top of the Ligue 1 table after six games.
However, despite signing a two-year deal with the club, Bielsa has revealed that he could be on his way out when the current campaign finishes.
"I do not like to make long-term plans. Besides, I have a contract for one year and not two with l'OM, at my request," he is quoted as saying by Goal.com.
"It's a decision made so that the management can see my project. I signed a contract for two years with a termination clause after one year, valid for both parties."
Marseille continue their Ligue 1 campaign on Tuesday night with a trip to Reims.