from the ESPN chicago story (includes my editing for brevity):
"...Ryne Sandberg did sit down with the pitcher when Zambrano reported on Tuesday.
"He was excited to be around. I had some words with him. I talked to him about being part of the team. We have a good thing going on here. We're in first place by a game and a half. We swept a doubleheader [Tuesday]. I wanted him to feel part of the team, but also let him know he could have a big impact on the young players here, showing how a major leaguer should go about his business and he was joining something good. He seemed to act like he was all on board and ready to get started and get to work and hopefully have a short stint here in the minors..."
In his HoF induction speech, he talked about respect for the game, and I think it is clear he works to instill that in his players, even those who are just spending a short time with the team.