Speaking as a pundit for Channel 4, Rooney stated: "Tonight the back line were a little bit disjointed at times, and that's through lack of experience.
"That's something I'm sure Gareth and the coaches will be showing them, you have to get that right because we're so excited by the attacking players we've got, they have to be backed up by the back line and being aggressive.
"I think tonight actually shows the importance of Harry Maguire to this England team and what a big loss he is to this squad."