Complex sentence: Zahra was carried off the field and will miss the remainder of the season due to the injury, however he is said to be back for the pre-season, which is a lot better than initial fears of being out for twelve months.
Split into simpler sentences: Zahra was carried off the field and missed the remainder of the season due to the injury. He is due to be back for the pre-season, a very large improvement from initial fears of being out for twelve months.