Bent has yet to feature for the Rams, but he is available for Saturday’s Championship clash against Ipswich Town away from home.
McClaren, who has worked with Bent at the England national team, speaks highly of the former Tottenham Hotspur and Sunderland star.
Deemed surplus to requirements at Villa, Bent will certainly be determined to put on a show for Derby as the season progresses.
The former Ipswich star has joined Derby at a time when the Rams are looking strong and are on course for promotion to the Premier League.
There is no guarantee that Bent will start regularly for Derby, but his experience and hunger could prove crucial for the team.