I’m glad Sammy Hagar wants back in Van Halen, because personally I love the Hagar era of Van Halen a lot more than David Lee Roth. I’m sure a Hagar/Van Halen reunion will happen someday but not this soon. It depends how long the new Van Halen will keep David Lee Roth in the band. Whenever David leaves again, then maybe Sammy will replace him. Van Halen is recording a new album with David so don’t expect a Van Halen/Hagar comeback.
More on it, here.