Assassins Creed IV for a general fun game. If he likes first person shooters, I believe Call of Duty Ghosts is the best one (no idea really, not my cup of tea). Driving games would be Need for Speed, but it's not a great driving game as we're all waiting for Drive Club - due to be released next year some time.
If money is available, get a PS Plus membership (monthly or yearly available) - as well as being able to play online and other benefits, you'll get two free games with this straight away that you can download from PSN - Resogun and Contrast. Resogun is awesome. I mean it - it doesn't necessarily seem as good as everyone says on first few plays, but after a few hours, you'll wonder where the time went. Contrast is an enjoyable enough distraction as well.