Updated

Former Daytona 500 winner Trevor Bayne will race Roush-Fenway Racing's No. 6 car fulltime in Sprint Cup next season.

Car owner Jack Roush said Saturday that he would like to field four Sprint Cup teams in 2015, but the lineup was still "in flux." Roush did not have any updates on negotiations with Carl Edwards and Greg Biffle.

The 23-year-old Bayne had been running a part-time Sprint Cup schedule for the Wood Brothers while competing on the full Nationwide circuit for Roush-Fenway.

Roush said Bayne's team would have fulltime sponsorship from AdvoCare, Bayne's Nationwide backer.

Bayne won Daytona in 2011. His best showing in four Sprint Cup races this season was 19th place at Texas Motor Speedway last month.