A lengthy coaching relationship between Mike Riley and Mark Banker is coming to an end in Lincoln.

It was reported by World-Herald Big Red that Nebraska isn’t going to renew Banker’s contract following the 2016 season, leaving the program’s defensive coordinator position temporarily vacant.  Banker came with Riley to Lincoln in 2015 and had served on his staff at various stops for 20 years.

Riley issued a press release on Wednesday:

I want to thank Mark for his hard work and contributions to our football program the past two years and for all of his service and dedication as a member of my other coaching staffs. We will conduct a national search to find a great coach, teacher and recruiter as we continue our pursuit of championships.

Despite ranking sixth in the B1G in total defense this past season, Nebraska’s defense was an area of concern in three of the teams losses. The Huskers gave up 140 points in losses to Ohio State, Iowa and Tennessee. In the loss to the Buckeyes, they defense surrendered 48 in a 62-3 defeat.

The Huskers allowed an average of 363.7 yards and 23.9 points per game this season and ranked fourth in the conference in interceptions, picking off 16 passes.

It was also reported that defensive backs coach Brian Stewart and director of player personnel Ryan Gunderson will also be leaving the program in pursuit of other opportunities.

To read more on the departure of the three members of Riley’s staff you can read it here.