Complex sentence: After joining as their head coach for a short spell, he left to work as part of Sampdoria coaching staff.Vujadin Boškov called him on to become his assistant during the second part of the 1998 season.
Split into simpler sentences: After joining as their head coach for a short spell, he left to work as part of Sampdoria coaching staff. Head coach Vujadin Boškov called him on to become his assistant during the second part of the 1998 season.