It could have been the team-up of the decade, but according to producer Timbaland, it was Britney Spears' "big head" that put the kibosh on a possible collaboration between her, Timbaland and her ex, Justin Timberlake. "She has no comeback story," Timbaland told MTV News. "She has to have a team. She needs to come back with Justin doing records. [But instead she got] so big-headed and [was] like 'Screw you, screw you, I don't need nobody.'" But all's not lost. If Britney could muster up an apology, Timbaland would consider working with her. "She should humble herself and make a phone call and say, 'I'm sorry.' She knows what she's sorry about," the producer adds. "She needs to say 'I was wrong.' And it'll definitely move forward. That's all she has to say."