Former Cubs teammate and current broadcaster Doug Glanville thinks he should.
He lays out his reasons why in this Tribune article.
I tend to agree with him. I don't approve of Sammy's (alleged) use of PED's, or the way he left the team back in 2004, but we can't pretend that he wasn't the reason we went to the ballpark for a few years there. The Cubs owe him at least a little something for that.
He has paid a price. He will never be in the Hall of Fame, despite Hall of Fame numbers. He will never have his number retired by the Cubs, despite setting so many Cubs records. For me, forgiving him doesn't seem like an outrageous gesture.