Bielsa spent almost 20 years with them and won Argentina's Primera Division in 1991 and 1992 before leaving 29 years ago.
Former Argentina and Atletico Madrid defender Jorge Griffa was his mentor in his early days at Newell's and says his former protégé must return to manage them before he retires.
“I don't know when, but one day he will have to come back because we all have to give Newell's what Newell's gave us," said Griffa.
“Marcelo really has a natural obligation that he must express by coming to his home club. He has a higher grade than mine because he is working in modern football. Therefore, in quotation marks, you have the obligation to return to your home club.
“The only club that he has to return is Newell's Old Boys because it is the club that gave him birth.
“All the people of Newell's Old Boys want him to return, so he has the obligation to return at the right time.
“I would like him to return and win everything within Newell's Old Boys. Time passes for everyone and he has to take as a fundamental part to end his career as a football coach at the club where he was born – Newell's."