Jason Kelce dropped subtle nods to his brother’s girlfriend Taylor Swift when announcing he was retiring from the NFL on Monday. The 36-year-old has called time on his 13-year career with the Philadelphia Eagles and made an emotional statement to the media. Kelce, who won Super Bowl LII with the Eagles in 2017, played 193 times in the NFL and is regarded as one of the greatest centres in the league’s history. He spoke in length about his career on Monday and revealed his gratitude for people who played a part in his journey, including his brother. But despite tearing up at regular times throug…