NASHVILLE—Clark Lea can see it now.  He knows his former quarterback Diego Pavia may not be a high pick in the NFL Draft. He knows that he may not be drafted at all. But, he doesn’t appear to believe that where Pavia goes in the draft will define how this all ultimately plays out for Pavia.  “We may look up in 12 years and he’s still playing football in the NFL,” Lea told Vandy on SI. “That's the level of belief I have in Diego and I'm excited for him.”  Between his name recognition, off the field incidents, front and forward family, unique skillset, undersized frame and never-ending confidence, Pavia has become the most polarizing prospect in Saturday’s day three of the NFL Draft. Some love Pavia’s confidence. Some believe it to be arrogance and hold it against him. Everybody knows him, though.  They know what he’s done, too.  Pavia led Vanderbilt to a program-best 10-3 record in his final season at Vanderbilt while throwing for 3,529 yards, 29 touchdowns and eight interceptions.…