Derby County make their return to Championship action this weekend when they make the trip to the capital, taking on Millwall at The Den. The Rams have enjoyed a decent start to life back in the second tier, picking up four wins from their opening nine games. While that has been largely positive for Paul Warne, the main concern so far may surround the fact that all of those victories have come at Pride Park. With not a single point picked up on the road. the Derby boss will be keen to open the account on their travels against Millwall. One key area is likely to dictate this encounter and it’s …