Amar'e Stoudemire is ready to follow Joe Johnson's lead ... telling TMZ Sports he's still training his ass off in hopes of signing with an NBA team next season.
36-year-old Stoudemire hasn't played in the NBA since 2016 during a stint with the Miami Heat -- but he hasn't stopped playing pro ball.
Amar'e went to Israel to play ball over there -- and spent a season hoopin' in Ice Cube's BIG3 league in 2018.