As Rapoport noted, Cook has until mandatory minicamp (which begins on June 10) to determine whether he's willing to actually hold out for a new contract. OTAs are optional, so he can't be fined for failing to show up.

The Buffalo Bills began OTAs Tuesday, and according to reports, every player was in attendance except one — James Cook. The star running back awaits a contract extension, and while OTAs are voluntary,

The Bills answer to James Cook's contract wish is to shut down talks ... and Cook has counter-moved by opting to sit out OTAs ... a "voluntary'' holdout, if you will.