DAYTONA BEACH, Fla. -- NASCAR's biggest free agent is off the market.

Kyle Busch signed a multiyear deal with Joe Gibbs Racing in December, multiple sources confirmed to ESPN on Friday.

USA Today first reported the deal during Friday's testing at Daytona International Speedway.

Busch, involved in a 12-car wreck during Friday afternoon's session, side-stepped questions when asked about the deal by USA Today.

"Everybody will find out (at the team's) media day what's coming down," Busch told the newspaper.

The Sprint Cup media tour runs from Jan. 21-24.

JGR president J.D. Gibbs told ESPN.com late last season that he was optimistic Busch would re-sign with the team and made it clear he wanted a new deal "sooner rather than later."

Busch is coming off a disappointing season in which he had only one win, missed the Chase and finished 13th in the points standings. He has 24 career Cup victories and a series-record 51 wins in the Nationwide Series.

Busch's decision to re-sign leaves 2004 Cup champion Kurt Busch, Earnhardt Ganassi Racing's Juan Pablo Montoya and Stewart-Haas Racing's Ryan Newman as the biggest free agents on the market.

Richard Childress Racing's Kevin Harvick reportedly already signed with SHR for 2014 at the end of last season.