In Mugs Halas Auditorium, in front of a throng of reporters, Marshall thanked all parties involved in bringing him to Chicago, including his former coach Tony Sporano.
He then smiled when asked about his relationship with Jay Cutler, with whom he played for three seasons in Denver.
"Right now, I'm talking to Jay, and I'm not saying anything to him. That's the exciting part about it, is that we communicate without even talking," Marshall said. "The body language, hand signals, being able to just read defenses and being on the same page, it's something that you don't find easy."
Cutler and Marshall had their best professional seasons while playing together for the Broncos. Both earned Pro Bowl appearances after the 2008 season, in which the duo connected 104 times for 1,265 yards and six touchdowns.
"There's a lot of great quarterbacks out there, there's a lot of great receivers out there, but it's hard to have that chemistry," said Marshall.
Cutler said he's been trying to bring Marshall into the fold ever since he was traded to Chicago in 2009.
"In my time here ... anyone who would listen to me, I petitioned to get Brandon here," said Cutler. "I don't' think it was lost on [GM] Phil [Emery]."
Marshall does bring baggage, including a recent incident at a New York City nightclub in which he allegedly punched a woman. At the podium, he took responsibility for his actions but said he won't be a distraction for the team going forward.
When asked if he felt the Bears were taking a risk by trading two third round picks for him, Marshall responded:
"Absolutely. From perception, yes. And from the things I've been through, yes. From the reality of it, yes.
"But the thing about it is one thing I've learned about Phil [Emery] so far is that he is a guy of details. He's definitely done his due diligence. he understands me, the person. He understands me, the player.
"Definitely they have high expectations out of me and expect me to be a great citizen, a great teammate. So I think that's a challenge for all of us every day, because of the ability that we have to make choices. So as long as you don't create disasters, as long as you don't create huge problems, it's OK."
With the success the two achieved in the past, Cutler foresees Marshall playing a huge role in the offense this season.
"He changes games," Cutler said. "He changes defenses. Defenses have to approach us differently now.
"You know he's going to get the ball a lot. It's just a fact. That's what we brought him here for. When he gets one-on-one coverage he's going to expect the ball to go his way and I'm going to expect him to get open. That's the reality of the situation. I think everyone in the offenses has to understand that.
"But there are going to be games where he has a safety over the top of him all game long. Defenses are just going to do that. That's going to open the door for Matt [Forte] and Devin [Hester] and Earl [Bennett] and everybody else on the other side. Like I said earlier, defenses are going to have to pick their poison of how they approach us."
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Jeremy Stoltz is Publisher of Bear Report magazine and BearReport.com and a member of the Pro Football Writers of America. To read him every day, visit BearReport.com and become a Chicago Bears insider.