The Minnesota Vikings and star running back Adrian Peterson are still at odds at this point of the 2015 NFL offseason and the controversial RB won’t be joining the team’s optional practices, according to multiple reports. Chris Tomasson of the St. Paul Pioneer Press first reported the development, which Ian Rapoport of confirmed.

The planned move to miss the Vikings’ organized team activities during the offseason is seen as Peterson’s way of sending a message to the Minnesota brass that he wants to be traded. According to a separate ESPN report, the star running back had told head coach Mike Zimmer that he will miss the team activities. The absence in the Organized Team Activities, or OTAs, could cost Peterson $250,000 for the workout bonus.

Earlier in the offseason, both sides tried to talk about the long-term future of Peterson in Minnesota. But the RB has made it clear via his agent that he would like to play for another team and has demanded his release from the Vikings.

The root of the tension between the Vikings and Peterson is the latter’s involvement with child abuse charges in 2014, which resulted in the running back missing 15 of 16 games for the team. Peterson is pegged to earn about $12.75 million for the 2015 NFL Season and is still under contract with the team through the 2017 season.

The Vikings have OTAs from May 26 to 28, June 2 to 4 and June 8 to 11 and will hold a team minicamp from June 16 to 18.