Open Extended ReactionsORCHARD PARK, N.Y. -- James Cook returned to practice Tuesday amid his contract dispute with the Buffalo Bills, appearing to at least pause the star running back's hold-in. Bills coach Sean McDermott said he expected Cook to return to practice earlier Tuesday, adding that "things have changed." "As players, we have to separate sometimes the business and the sport," Bills quarterback Josh Allen said after practice. Cook had participated in the first eight days of training camp practice and the Bills' three days of mandatory minicamp. The Bills have maintained that they wanted to pay Cook throughout the offseason, with negotiations beginning early in the offseason.