Ahead of the Philadelphia Eagles' season finale against the New York Giants, Saquon Barkley might be trolling his old team with his new advertisement.Barkley, who played six seasons with the G-Men before joining the Eagles this past offseason, starred in an ad for Unisom, a sleep aid.But the ad posted a cryptic message that may or may not be directed at Giants owner John Mara, who infamously said he would "have a hard time sleeping if Saquon goes to Philadelphia."CLICK HERE FOR MORE SPORTS COVERAGE ON FOXNEWS.COM"I heard some of you were having trouble sleeping, so I wrote you a