Complex sentence: So far Mensah's season with Sunderland has been hampered with the constant reoccurrence of a calf injury, despite this however teammate Michael Turner has described him as the best defender he has ever played with.
Split into simpler sentences: So far Mensah's season with Sunderland has been hampered with the constant reoccurrence of a calf injury. Notwithstanding, teammate Michael Turner described Mensah as the best defender he has ever played with.