Revenge is a classic literary motive. One potential problem with setting it up as a character point for a PC is that the PC needs to have some terrible event in their past which scarred them to the point of seeking awful revenge. If the player is okay with this, then fine - they can even help set up the backstory. But some players may not want you messing with their family and loved ones off-screen - which is a thing you should respect.

Instead you can go for something else that PCs value highly. They can be a starting character with nothing but the leather armour on their back and 40 silver pieces to their name, just like everyone else, but if you tell him he used to be a fabulously wealthy heir before his parents died (of natural causes) and the vizier (it's always the vizier) stole all his money and lands and banished him from the kingdom...

That should set things up nicely.

Transcript

Boba Fett: Why do you want this Starkiller so much?
Darth Vader: He murdered my son.
Boba Fett: Aaaah. Revenge. Say no more.
Boba Fett: I too seek someone: a man who slew my father, betrayed my mother unto death, and precipitated the bloodbath in which my adoptive father was killed.
Boba Fett: He tasks me. He tasks me and I shall have him! I'll chase him 'round the moons of Nibia and 'round the Antares Maelstrom and 'round perdition's flames before I give him up!
{beat}
Darth Vader: Are you trying to one-up me?
Boba Fett: I count two, not one.