Thabo Sefolosha -- I May Not Sue NYC for $50 Mil

Thabo Sefolosha says he's not 100% committed to suing New York City over the police incident that left him with a broken leg.

It's true that Thabo's attorney Alex Spiro filed a notice of claim with city officials clearing the way to file a lawsuit, as first reported by the NY Post.

But Spiro tells TMZ Sports the notice is just a way to keep the option open while they decide IF they'll actually pull the trigger on a lawsuit.

"To reserve the rights of Mr. Sefolosha, filing the notice of claim was a necessary step," Spiro says ... "At this time, no final decision has been reached."

That being said, if we were the betting type ... we'd still have our money on lawsuit.