The Tigers have not officially announced the deal.
The deal was pending a physical Monday afternoon. Baseball America and TigsTown.com first reported the agreement, including a $525,000 bonus that ranks well above slot recommendations for that round.
With regard to his talent, Gibson was projected well above that spot, but the expectations that he would go to college barring a favorable contract caused him to drop through the early rounds coming out of Stratford Academy in Georgia. Many teams projected him as a third- or fourth-round talent, if not for signability.
He's a left-handed hitter with projectable power, according to scouting reports, and a chance to make the big leagues as a corner outfielder.
The deal means the Tigers have deals with each of their top 15 selections, a haul that helps makes up for the lack of a first-round selection.