Ok now I'm maybe being a conspiracy theorist, but why specify a "history with Holmgren"
“It’s not a threat at all,” Cerrato said. “Jim welcomed the idea if it was the right guy. So we came up with a list of people that had a background in the West Coast offense and a history with Holmgren. Nobody’s job on offense changes. Jim still calls the plays.”
Cerrato: Lewis 'Another Set of Eyes' For Zorn
Interesting note about the experience coaching receivers. He can replace Smith and Hixon at once!