Don't pencil rookie into the ' starting lineup just yet.Former special teamer and third-year wideout each spent time opposite with the first-team offense during offseason practices.Coach John Harbaugh is pushing Brown for a breakout season."I have high hopes for him," Harbaugh said recently, via the ' official website. "I . ... It's time for him to step up and become what he's capable of doing. He's very determined to do that."When training camp opens late next month, Brown will be battling Aiken and Perriman for a starting job."It's Jack St. Ivany Jersey very competitive," wide receivers coach Bobby Engram said. "Marlon has done what he always does, which is make plays."Brown didn't make enough plays in 2014. After recording seven touchdowns as an undrafted rookie in 2013, he was kept out of the end zone entirely last season.In fact, the 6-foot-5 redzone threat wasn't targeted once inside the 20-yard line.Even if he ends up being relegated to the No. 3 role behind Perriman or Aiken, that should change this season.The latest Podcast to discu s non- contenders, and an all-new 'Orr You Kidding Me.' Find more content on . Greg Millen Jersey