Brent Celek got the call on the night of his 31st birthday on Monday. It was his agent on the other line, telling him that the Eagles had extended an offer for a three-year deal that would secure his tenure with the team through 2018 and likely cement him as a career-long member of the franchise. The veteran tight end, who ranks second only to Eagles great Pete Retzlaff in nearly every important category for players at that position, had long dreamed of ending his career in Philadelphia, and when he heard the news he struggled to fight back tears.