You can't invest millions in someone and have their off field issues plague your team and handcuff some of the teams money and/or quality players... It is Idiotic to think you can bring someone in and over-look his character problems ~ DID I SAY IDIOTIC? Yes, go ask the Detroit Lions (Charles Rogers) go ask the super bowl champion N.Y. Giants (Plaxico Buress) go ask Cleveland Browns (Dante Stallworth) go ask Jacksonville Jags (Reggie Williams) go ask Buffalo Bills (Marshawn Lynch) go ask Chicago Bears (Cedric Benson) go ask Miami Dolphins (Ricky Williams) go ask Atlanta Falcons (Michael Vick) go ask Dallas Cowboys how (Pacman Jones) is doing or Baltimore Ravens and (Ray Lewis)
I could go on and on about how CHARACTER DOES MATTER... Just ask those teams how much money, time, and effort they put in to the players and what they had to endure or lose in the process.

In life, sports, home, work, politics, CHARACTER IS EVERYTHING!  You build your team on a solid foundation with character guys and it will be very difficult to destroy it.