"The home draw was the priority in my mind," Lewington told the club's official website.
"It was nice to come out of the hat first for a change and, if I'm honest, avoiding Arsenal was my next wish.
"Of the Premiership teams left in the draw we've potentially got the weakest of them, or we get to play a side who we've already beaten at home this season.
"This draw gives us a great chance of winning and as far as our fans are concerned I think a home quarter-final tie will sell itself."