Complex sentence: West Ham were relegated in 1991--92 but Bonds again led them to promotion in 1992--93, when they finished as runner-up to Newcastle United, and took West Ham to a mid-table finish in 1993--94.
Split into simpler sentences: West Ham were relegated in the 1991--92 season, but Bonds again led them to promotion the following season in 1992--93, when they finished as runner-up to Newcastle United. Bonds guided West Ham to a mid-table finish in 1993--94.