Jamie Spears has asked Justin Timberlake to perform with his daughter. Britney's dad is set to bring her life back the way it was when he reportedly begged her ex-boyfriend to perform with her in concerts.

Jamie, who is currently the conservator of the pop star's estate, allegedly contacted the "SexyBack" singer to "jumpstart" his daughter's career. Timberlake refused because he doesn't want girlfriend Jessica Biel to get jealous.

A source says, "Jamie wanted Justin to help Britney. Justine had seriously considered doing a couple of concerts with Britney later this year to jump start her career."

"Jamie knows Justin has so much goodwill in the music industry and his support would do her good."

"But Justin told Jamie that while he still cares deeply for Britney and wishes her all the best, it isn't going to happen."

It was recently reported that Britney was busy rehearsing for a world tour comeback.

A source reveals, "Britney will be leaving the country in the next few weeks, after training in privacy for a month."