BEREA -- It’s been quite some time since the Cleveland Browns have had a big wide receiver. When the team selected Denzel Boston at No. 39 overall, Browns head coach Todd Monken explained that the team was looking for a wide receiver who could be a size matchup, especially in the red zone, which the team did not previously have. At 6-foot-4, Boston is the biggest wide receiver that the Browns have had in quite some time. Even Braylon Edwards and Josh Gordon were only 6-foot-3. Throughout the first two days of rookie minicamp, Boston flashed as he caught passes from sixth-round quarterback Taylen Green for the first time in a Browns uniform . Boston’s size is noticeable on the field, especially compared to the other receivers in Berea.  Following his first two practices of rookie minicamp, Monken said that Boston’s big catch radius is what you immediately notice. “He does have quick feet getting off the line of scrimmage, you can see that,” Monken said after Saturday’s rookie minicamp practice.…