Complex sentence: Abdisalam was an Arsenal fan when growing up, his hero was Patrick Vieira when he was playing there, recently his close friend Yaya Toure who he considers as a big brother and Abou Diaby.
Split into simpler sentences: Abdisalam was an Arsenal fan when growing up, his hero was Patrick Vieira when he was playing there. Recent years his been looking up to his close friend Yaya Toure who he considers as a big brother and Abou Diaby.