March 5 (UPI) -- The Philadelphia Eagles agreed to a three-year contract extension with linebacker Zack Baun, the team announced Wednesday. Sources told NFL Network , ESPN and The Athletic that the contract is worth $51 million and includes $34 million guaranteed. Advertisement Baun, 28, totaled a career-high 151 combined tackles, 11 tackles for a loss, five forced fumbles, four passes defensed, an interception and a fumble recovery over 16 starts last season en route to first-team All-Pro and