Zakir Naik is not an AALIM. He is a debater but that does not mean that he is also mufti now. Sometimes too much fame can cause a person to believe that yes he is better than scholars and he has a right to pass fatwas also. I would suggest that people try to go to authentic Ulema for their religious issues. Who is an authentic Alim? The one who can relate his knowledge/learning chain to the Holy Prophet pbuh. Like I am a student of so and so and he was a student of ..... until the chain of learning reaches The Holy Prophet pbuh. Now there are people who have studied in western universities, I would consider such people as Aalim because the source of their knowledge does not lead to the Holy Prophet pbuh.