In a string of tweets on Thursday afternoon, running back Adrian Peterson said NFL players should have the same kind of fully guaranteed contracts that players in other sports receive.

OK, Adrian, thanks." Peterson, 29, is in the fourth year of a seven-year, $100 million contract that will pay him $11.75 million this autumn to play for the Vikings.

If the Vikings and star RB Adrian Peterson cannot agree on a restructured contract, the Cowboys could be an option, according to league sources. DeMarcus Ware, likewise, would consider Dallas.

OK, Adrian, thanks." Peterson, 29, is in the fourth year of a seven-year, $100 million contract that will pay him $11.75 million this autumn to play for the Vikings.