Hoffenheim confirmed the signing of the 22-year-old earlier this week. Hamad will join the Bundesliga side in the January transfer window.
“Everything felt right immediately,” Hamad told Fotbollskanalen.se.
“It was Hoffenheim who contacted us. They have scouted me thoroughly, and their coach and sporting director have got big confidence in me. That feels good.
“I have been negotiating with many clubs from Russia, Italy, France and England. West Ham and Sunderland were among them, but none of them felt as good as Hoffenheim when their sporting director came.
“It was not a difficult choice, and my agents Nenad and Ferhat have done a fantastic job.”