Before this incident with his girlfriend, I don't recall him ever being in trouble. The problem he's had on the field is being healthy. For the past two years, he could never stay healthy.
Regardless of his character risk, the guy is great as a returner and has speed to burn. As for his skills as a WR, he probably won't ever contribute in that regard.
I'm not a fan of men putting their hands on a woman, but since we're about to trade for a guy who supposedly likes to spit on women and bite people's legs in nightclub incidents, it's a wash, IMO.