Michigan State’s next potential lottery pick made his summer league debut Tuesday night. Jaren Jackson Jr. didn’t quite light up the gym as his teammate did a year ago. That’s fine. Not everyone’s game is suited to pickup ball the way Miles Bridges is. Jackson’s game is more earthbound by comparison, though his ceiling at the next level might be higher than his teammate’s. The 6-foot-11 forward arrived at the Aim High gymnasium as a possible top-10 pick in next year’s NBA draft. On Tuesday night, he gave the packed house a glimpse of his varied skills. First, he’s long. Very long. He has the sort of length coach Tom Izzo hasn’t had since Adreian Payne. But Jackson isn’t just a tall shooter like Payne. He can put the ball on the floor. He can pass out of the post. He can take a pass on the break and Eurostep to the rim.