Mark Wahlberg Still High On Baker Mayfield After Trade To Panthers

Mark Wahlberg is still pulling for his guy, Baker Mayfield ... telling TMZ Sports the new Carolina Panthers quarterback has a "bright future ahead of him" -- even if it's not in Foxborough.

Remember, Wahlberg previously told us TWICE he saw #6 as Tom Brady's successor with the New England Patriots ... saying Mayfield was the "heir to the throne."

Of course, that was before a guy named Mac Jones came along ... and while he's "absolutely" still a fan of Bake, Mark is coming to terms with the fact he won't be seeing him in a Patriots uniform anytime soon.

"It's a very stacked field at the quarterback position," Wahlberg said in New York this week. "It also has to do with the coach and the team, but he's got a big, bright future ahead of him."

Mayfield was recently traded to the Panthers after a bad falling out with Cleveland ... which was sparked by the Browns' pursuit of Deshaun Watson.

Baker says he felt disrespected by the Browns' handling of the situation ... but says he's moved on and is excited for a fresh start in Charlotte.