The Cleveland Browns officially announced Saturday that offensive coordinator Kyle Shanahan’s resignation was accepted and quarterbacks coach Dowell Loggains was not retained.

On Thursday, the Browns and Shanahan parted ways after reports surfaced that friction between the coaching staff and front office became an issue for the first-year assistant. Shanahan met with owner Jimmy Haslam on Wednesday and requested his release, which was granted. Loggains reportedly was fired the same day.

“After conversations with Kyle this week we’ve determined that it would be in the best interest of the Cleveland Browns that he pursue other opportunities and we have accepted his resignation,” head coach Mike Pettine said in a statement. “In Dowell’s case, it was a difficult decision but one that we felt we had to make. We wish them both well.

“Our focus quickly turns to finding an outstanding coach to lead our offense and I am confident we will bring in highly qualified individuals to help us develop, improve, and achieve the success we are all seeking. I look forward to working with the staff as we go through this process to bring in coaches committed to helping the Cleveland Browns lay a strong foundation to take our offense to a consistently high level in the 2015 season and beyond.”

The Browns (7-9) finished the regular season ranked 23rd in total offense (324.6 yards per game), 20th in passing offense (216.6) and 17th in rushing offense (108.0).

Shanahan, 35, was hired in February 2014 as Pettine’s first offensive coordinator with the Browns. The 10-year coaching veteran spent the previous four years working as the Redskins’ offensive coordinator under his father, Mike Shanahan, in Washington before both were fired.

“I appreciate the opportunity Mike Pettine, Ray Farmer and Jimmy Haslam gave me to lead the Browns offense in 2014,” Shanahan said a statement released by the Browns. “The Browns organization is committed to improvement and winning. I regret how the inner workings of the organization were represented publicly over the last few days.

“Ray and Mike both have the work ethic, experience and talent to work together to turn this organization into a winner. In light of the circumstances, I have decided to resign. I’m grateful for my time with the Browns and wish them great success going forward.”

Before his one-year stint with the Browns, Loggains was the Tennessee Titans’ offensive coordinator from 2012-13. Loggains got his NFL start with the Dallas Cowboys as a scouting assistant before he joined the Titans as a coaching administrative assistant in 2006.

There were hints that the front office placed pressure on coaches to have rookie Johnny Manziel play over starter Brian Hoyer.

Manziel started two games this season and completed 18 of 35 passes for 175 yards and added nine rushes for 29 yards. He was placed on injured reserve after injuring his hamstring in Week 16 against the Carolina Panthers.