Complex sentence: Finally, his cousin Paula (who is in love with him) comes up with a compromise: he will study in Paris for two years, after which an impartial third party will determine whether he has it in him to reach his goal.
Split into simpler sentences: Finally, his cousin Paula (who is in love with him), comes up with a compromise. He can study in Paris for two years; at the end of that time, an impartial third party will determine whether he has it in him to reach his goal.