Justin Timberlake's amazing comeback just got better - he's expected to debut his new album 'The 20/20 Experience' with close to a million sales in the U.S. album chart this week. Experts predict the pop star and actor will rocket to number one in the Billboard 200 countdown on Wednesday with over 950,000 first-week sales. And chart trackers insist sales could top a million if they spike on Sunday. If Timberlake manages that feat, The 20/20 Experience will become only the 19th album to do that. Taylor Swift's 'Red' was the last album to top a million sales in a week when that album debuted at number one last year. Meanwhile, Timberlake's first album for seven years has shot to the top of the British charts, unseating David Bowie's comeback, 'The Next Day'. But Timberlake has failed to secure a U.K. chart double - The Saturdays' What About Us toppled his Mirrors at the top of the singles countdown on Sunday. 'Mirrors' drops to number two.