i was reading that Juan Castillo would be a good candidate.. He had success for several seasons ..

"Juan Castillo. He served 13 successful years as offensive line coach for the Philadelphia Eagles, and coached up such players as Tra Thomas, Jon Runyan and Jermane Mayberry. He may not have been the perfect choice to run the Eagles defense, but there is no arguing with the success the offensive line enjoyed under his watch.With young talents such as Marcus Gilbert, Maurkice Pouncey, David DeCastro and Mike Adams entrenched on the line for the Steelers, Castillo’s intensity and know-how could be just what the doctor ordered to accelerate their growth."