Status: Practicing during OTAs Pro: In addition to tight end, Boyle has emerged as a candidate to replace the void fullback Kyle Juszczyk left in free agency. At 6 feet 4 and 260 pounds, Boyle has the size and aggressiveness to play either position. Con: Boyle has had unreliable availability in his first two seasons. He endured a four-game suspension for violating the NFL’s policy on performance-enhancing drugs to end his rookie year in 2015 and missed the first 10 games of 2016 for the same infraction. Fact: A fifth-round pick from Delaware, Boyle has averaged 8.2 yards a catch as a pro. (Bill Feig / AP)