I wonder if McD will now use 3 LBs as a standard run formation? Using a new LB (Campbell via Draft or Zac Cunningham as FA) and then using Milano and Bernard as OLBs. In Carolina he often used a 4-3 with Keuchly at MLB and Thomas Davis and Shaq Thompson at OLBs.
In 2017 with Bills he used a 4-3 with Lorax, Preston Brown and/or Humber/Milano.