DeSean mum on Jay-Z link, allegedly owes Rosenhaus big money

At a time when Eagles coach Chip Kelly would prefer that receiver DeSean Jackson focus on football, off-field issues are invading the conversation. On Tuesday, Jackson danced around questions regarding the possibility that he’ll hire Jay-Z’s Roc Nation Sports agency for representation in the wake of severing ties with Drew Rosenhaus. “You never know,” Jackson,…