And Penneteau sees similar traits with Osimhen and Drogba, who excelled for Marseille before earning a career-changing move to Chelsea.
"He doesn't surprise me," Penneteau told BFM with RMC Sport.
"When we discovered him, when he first arrived, two clubs refused to sign him because of small physical problems.
"From the first training sessions we saw that he was a player of different class. I said it when he moved to Lille but for me, he might be the next Drogba in the French league."
He added: "If he stays at least another two seasons, he will score goal after goal.
"He has all the qualities of a modern striker.
"He is fast, he jumps high, he is strong in duels, good on the ball, he can play deep.
"He will get rid of his little imperfections as he plays. He is a phenomenon."