Matt Eberflus came from Indianapolis with an established track record of success on defense. So it was hardly a surprise when he brought over most of his staff from that team to Chicago, some of them with well-deserved promotions. While Alan Williams gets most of the attention as the new defensive coordinator, perhaps the most unheralded addition is new defensive back coach James Rowe. When you hear the rumbling around the NFL, his name comes up as somebody destined for bigger things. A future head coach, to be sure. It is only a matter of time. Rowe has delivered success everywhere he’s been at both the college and pro levels.…