"We have not really studied it lately," McKay told reporters on Monday. "It's been a long time since we looked at it, almost back to NFL Europe, and when we looked at NFL Europe and the value of NFL Europe, what we saw in NFL Europe was, it definitely had an impact on some linemen. It definitely had an impact on officiating. It was very costly. And in the end, we transitioned quite quickly to the idea that we liked having more practice squad players than we did a developmental league."