He was the Jags DC under Gus Bradley during their "Sacksonville" years.
Would love to have Bradley too honestly, and he's certainly connected with Canales. But he's got an AHC title right now in San Fran so he likely couldn't be interviewed as a DC.
Wash has been coaching way longer including five years as the Jaguars DC. Cooley's only been coaching at the pro level since 2020.
(I know that doesn't always mean a coach is better but I'm more comfortable that way)
Mind you, Wash has typically run a 4-3 scheme so it might mean some adjustments.