Complex sentence: Jabba had come to realize that the protocol droid had the potential to become an excellent Bounty Hunter, but 4-LOM's programming still prevented him from taking any violent action or harming another organic being.
Split into simpler sentences: Jabba had come to realise that the protocol droid had the potential to become an excellent Bounty Hunter. However, 4-LOM's programming still prevented him from taking any violent action or harming another organic being.