The centre-back has been linked with a move to Brighton and Hove Albion this summer and handed in a transfer request at Reading at the end of last week.
Moore has been training with the Royals ahead of the 2018-19 Championship season, but Clement said he will not be available for the visit of the Rams.
“Liam won't be considered for selection," he told football.london.
“I don't think it's right that I do that. It's not right for the other team (interested in him), the club or himself.
“Fortunately we know it's going to be a quick solution because the window shuts next week. Then we'll move on with or without him."