A deal is almost set for David Lee Roth to return to the Van Halen fold for a summer tour of amphitheaters, sources told Billboard.com

They said a contract could be signed as early as Wednesday for tour promoter Live Nation to produce a 40-date trek, which would mark Roth’s first outing with the rock band in more than 20 years.

Spokeswomen for Roth and the band said they were unable to provide any confirmation.

Guitarist Eddie Van Halen’s 15-year-old son Wolfgang has stepped in for original bassist Michael Anthony in the new incarnation of the group, which also features Eddie’s brother Alex Van Halen on drums.

Van Halen last toured in 2004 with vocalist Sammy Hagar, Roth’s replacement, grossing nearly $40 million, according to Billboard Boxscore. Hagar refused to collaborate further with the Van Halen brothers after the tour’s completion, although he has consistently played live with Anthony in recent years. The warring factions may wind up meeting in public in March when Van Halen is inducted into the Rock and Roll Hall of Fame.

Reuters/Billboard