‘We’ll start with the most obvious question – does Cook, the Bills’ top running back, make an appearance? Cook, who is seeking a contract extension, was a no-show at the Bills’ voluntary OTAs. General manager Brandon Beane, different Bills coaches and teammates have all expressed that the Bills still “love ‘Jimbo.’ ” If Cook is to skip – or to show up and not participate – will that sour the Bills? Cook, 25, was strong for the Bills last season, and the team knows that. The disagreement is just on his exact value. The two sides met but were not able to come to an agreement during the offseason, leading to Cook’s dissatisfaction.’