He is suing for race, religious, and gender discrimination. Saying he was treated unfairly because he is a white, religious, man. It is a rather novel theory, especially the gender and race parts.
His chances of success on the merits are slim. The chances that this sees a jury are even slimmer. If he can survive a motion for summary judgment, this likely ends in a mutually agreeable settlement. It may not even get that far if the parties can come to agreeable terms earlier. They will both be motivated to settle- Bonneville doesn’t want the publicity or legal expenses, and Grant’s attorney will likely sell him on settlement given the low odds of success.