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."