The striker touched on everything from the city's enduring devotion to Diego Maradona to the disbelief that greeted his decision to join the Turkish club.
Reflecting on his years in Naples, Osimhen described the near-religious status Maradona still holds among Napoli's supporters.
"You can't speak badly of Maradona there, it's blasphemy," he said. "Nobody can say anything if they care about seeing tomorrow (laughs).
"Even if you win five Champions Leagues and five league titles, you're wasting your time — you'll never be able to replace Maradona in the hearts of Napoli's fans."
The Nigerian striker also recalled the reaction when he first revealed his intention to join Galatasaray in 2024, a move that initially struck the Istanbul club's own hierarchy as implausible.
"When I told the Galatasaray vice-president I wanted to join the team, he thought it was a joke," Osimhen said. "Even the coach kept asking me, 'Are you serious?' They couldn't believe I was actually coming — I didn't even know the fans were tracking my private jet."
The anecdotes offered a rare, lighter glimpse into a move that has since proven transformative for both player and club, with Osimhen establishing himself as one of the Super Lig's most feared forwards since completing his switch from Napoli.
That switch came after years of speculation and an increasingly strained relationship with the Italian club.
Osimhen arrived in Naples in 2020 for a then-club-record fee and went on to fire Napoli to the Scudetto in 2022-23, their first league title in 33 years, finishing as Serie A's top scorer with 26 goals along the way. He spent the 2024-25 season on loan in Istanbul before Galatasaray made the move permanent for a reported €75m, smashing the record for a transfer into Turkish football and underlining just how highly he is now rated in his adopted home, even if, as he made clear on the podcast, no player will ever quite match what Maradona still means to Naples.