Complex sentence: In July 2011 he was promoted to first team squad, and played his first match as a professional on 20 December, coming on as a second-half substitute in a 0-2 home loss against Milan.
Split into simpler sentences: In July 2011 he was promoted to first team squad. However, only made his debut on 20 December 2011, in a 0-2 home loss against Milan.