The Bengals have a host of youthful challengers for the starting WR spot opposite A.J. Green. Of note: Swift Brandon Tate, who’s considered one of the viable candidates for the job, does not turn 25 until October — and he’s the oldest competitor. He practiced with the first team during OTAs, according to The Cincinnati Enquirer. Rookie Mohamed Sanu, a third-round pick from Rutgers, is also in the mix, and he should be considered one of the major contenders. Sanu has showed well early on in workouts, we’re told. “He’s going to be able to come in here and play right away as a rookie,” head coach Marvin Lewis said of Sanu earlier in May. “He’s going to push to start and for playing time.” Sanu, who turns 23 in August, caught 115 passes in his final season at Rutgers. He’s an athletic, versatile possession receiver. Second-year pro Armon Binns, 22, who spent most of the 2011 season on the practice squad, will also get a look. The 6-3, 209-pound Binns is primarily a possession threat. Rookie Marvin Jones, a fifth-round pick from Cal, could also compete for a role. The 22-year-old Jones has good ball skills but struggles to get separation.