Jim Caldwell mum on Eric Ebron’s injury after sitting out practice Wednesday

Detroit Lions first-round pick Eric Ebron sat out practice Wednesday and may not play in Saturday’s preseason opener against the Cleveland Browns. However, head coach Jim Caldwell was tight-lipped on supplying details of Ebron’s injury after the team wrapped up their workouts. “He has an injury,” Caldwell said, via Kyle Meinke of MLive.com. “We’ll keep…