Updated

Michael Waltrip says he is willing to let driver Martin Truex Jr. leave for another team if Michael Waltrip Racing is unable to find sponsorship for the 2014 season.

NAPA Auto Parts will end its multimillion-dollar sponsorship of MWR at the end of the year, the latest fallout from the team's attempt to manipulate a race to get Truex into NASCAR's version of the playoffs.

Napa is Truex's primary sponsor and in the first year of a three-year extension announced last August. The deal ran through the 2015 season and is believed to be worth at least $15 million a year.

Waltrip said Friday at New Hampshire Motor Speedway that he hoped Truex will stay with the organization. Waltrip says he "will not hold him back" if another team wanted to sign Truex.