Complex sentence: He totalled three goals and an assist that month to help his team remain unbeaten, earning him a second Player of the Month accolade; in mid-December, however, he suffered a hamstring injury against RCD Espanyol which sidelined him for two months.
Split into simpler sentences: He totalled three goals and an assist that month to help his team remain unbeaten, earning him a second Player of the Month accolade. In mid-December, however, he suffered a hamstring injury against Espanyol, which sidelined him for two months.