Roy: "Andros took a slight knock on Friday so we will have to monitor that but we are hopeful he will be okay for Tuesday.
"I think I'll keep the ideas about the team to myself for the moment, not least of all because the players haven't been informed.
"I'm not certain they have as clear an idea as they would normally do as there's been no functional work done (in training).
"I'm not even certain the players are certain who's going to play at right-back in place of the suspended Kyle Walker.
"They (the substitutes) were in contention against Montenegro and they are in contention again.
"In Michael Carrick and Jack Wilshere I have two world-class players. We are blessed in the midfield department.
"In fact I would be so bold as to say any combination of four would get the job done."