Ishak joins Parma on a four-year deal for an undisclosed fee.
The 20-year-old striker has signed for the Crociati from the German club, putting pen-to-paper on a contract until 2017.
Tribal Football Staff are dedicated to the football tribes from all over the world. Our team is passionate about delivering football news to our hundreds of thousands of followers in all the corners of the globe. Football is life, It never stops, Neither do we.