He is a talent, but the Tiges will be the 4th (I think) club to try and turn him around now. Some people can be turned around and some turn themselves around as they get older, but this bloke has had opportunity after opportunity and has been an epic failure each time. Considering the NRL have promised to punish the clubs that sign these types of failtards if they re-offend, the Tiges are taking a big risk.
Sometimes, the culture of a club can rescue these sorts of misfits. Other times they have the opposite effect and drag the whole culture down around them.