"But it shows the Bulgarian courts have recognised what their prime minister has come out and said. He has said we can expect fairness and I'm delighted with that.
"Anything which means we don't have to be stuck in limbo a day longer is a good thing."
Now his legal team, including a new top international barrister, must battle against time to be ready for the appeal in the Bulgarian capital Sofia next month.
Politicians who have campaigned for Michael also welcomed the news.