I thought Miller did well v Nigeria too but given he was without a club he shouldn't have been in recent squads.
However our CM players come into their own when we don't have the ball. Trap likes 2 holding defensive midfield players. Any Reid cannot play that role. He doesn't tackle or close down well enough. He is better with the ball than our current options.
I would have him in the squad but not in the team. I'd use him as a sub if a chasing a game.