McVay was part of the Redskins' coaching re-shuffle in the off-season as Jay Gruden was appointed as head coach to replace Mike Shanahan following their 3-13 season, and was promoted to his new role from tight ends coach in the last campaign.
McVay told ESPN: "It'll be one of those deals where I help Jay wherever I need to fill in. I'll coach quarterbacks this year too. Jay will be the offensive coordinator and call the plays.
"But my job is to help as much as I can to implement the game plan. How involved I'll be as far as install, we haven't decided that yet. I want to give a bunch of ideas as if I'm putting the game plan together."
McVay has been with the Redskins since the 2010 season.