2:53 PM -- TMZ Sports spoke with Ike about his big pitch to Shohei Ohtani ... and while he hasn't heard from the athlete just yet, he said he's been getting a ton of positive feedback from Giants fans for his efforts.

Ike says if he really does sign with S.F., he's fully willing to change EVERY Ike's location in America in honor of the Shohei ... which he estimates would cost him around $500k, but would be totally worth it.

Ike also spoke more about Kevin Durant's current status with his chain ... and he said the Phoenix Suns hooper STILL gets free sandwiches to this day even though he no longer plays for the Warriors -- so keep that in mind, Shohei!!

San Francisco fans are desperate to get Shohei Ohtani to sign with their beloved team ... with one supporter going as far as offering the MLB superstar free sandwiches for life AND a complete rebranding of his shop if he joins the Giants in free agency!!

Ike Shehadeh -- diehard Giants fan and founder of the Ike's Love & Sandwiches chain -- laid out his terms in a social media post this week ... saying if the two-time MVP ditches the Los Angeles Angels for S.F. this offseason, he'll hook him up with unlimited grub and his own signature menu item.

Ike -- who made similar offers to guys like Kevin Durant and Aaron Judge in the past -- took it one step further for the Japanese sensation ... saying he will also change the naming rights of his establishment to "Shohei's Love & Sandwiches" if he takes his talents to the Bay Area.

The sandwich guru even started the brainstorming process on what Ohtani's own item would look like ... taking inspiration from the Giants' orange and black colors to create a tasty steak and barbeque combo.

The Giants are among the possible realistic landing spots for Ohtani ... with the Dodgers, Mets, Cubs, Rangers and pretty much any other team that can afford him expected to enter the race.

Ohtani is reportedly slated to get at least half a billion dollars with his new deal, so he may not be worried too much about the sandwich offer ... but hey, ya can't knock the dude for trying!!