Prince Amukamara is going to bat for Mitch Trubisky ... telling TMZ Sports he has ZERO doubts about his Bears teammate -- saying the QB is going to be just fine!!!
"You heard it here," Prince says. "In Trubisky we trust!"
Of course, Chicago fans don't share nearly the same level of confidence in Mitch as Prince ... there's talk Bears faithful would rather see a free agent like Marcus Mariota or Jameis Winston under center next season.
But, when we got Prince out in Miami recently .