New Orleans Saints secondary coach Aaron Glenn works with players during minicamp Wednesday, June 13, 2018, at the New Orleans Saints training facility in Metairie.

The Cincinnati Bengals were eyeing one of the New Orleans Saints assistants to fill their defensive coordinator vacancy.

The Saints have apparently said no.

Ian Rapoport of the NFL Network reported Thursday that the Saints are planning to block the Bengals' request to interview defensive backs coach Aaron Glenn. If that's the case, the Bengals lengthy search for a coordinator continues.

After Florida Gators defensive coordinator Todd Grantham turned down the job, the Bengals turned their attention toward Glenn, ESPN reported earlier Thursday.

The Bengals recently hired former Los Angeles Rams quarterbacks coach Zac Taylor as their head coach. Since then, he's had some trouble locking down a defensive coordinator.

Jack Del Rio and Dom Capers were also briefly linked with the job, and Dennis Allen's name came up before he re-signed to stick with the Saints. 

New Orleans thinks very highly of Glenn, and his players often talk about how impactful he's been in developing them. It appears to be a matter of time before he gets an opportunity to move up in the coaching ranks.

Glenn has been on the Saints coaching staff since the 2016 season. 

— Rod Walker contributed to this report

Follow Nick Underhill on Twitter, @nick_underhill.​