Where Lions coaches want to see development from tackle Giovanni Manu: ‘It’s a huge step’

Where Lions coaches want to see development from tackle Giovanni Manu: ‘It’s a huge step’

ALLEN PARK — If the future outlook of the Detroit Lions’ offensive line were a stock ticker, it would have both spiked and crashed at several points in the last few months. Christian Mahogany, a sixth-round pick a year ago, showed early signs of promise when making two spot starts toward the end of last season, including Detroit’s playoff loss to Washington. But the offseason began with Kevin Zeitler, an uber-reliable right guard who spent one s…