Complex sentence: In December 1972 Docherty replaced Frank O'Farrell as manager of a struggling Manchester United in difficulties near the bottom of England's top flight, on 10 January 1973 they gambled on the raw promise they seen in 20 year old Holton.
Split into simpler sentences: In December 1972 Docherty replaced Frank O'Farrell as manager of a struggling Manchester United in difficulties near the bottom of England's top flight. On 10 January 1973 they gambled on the raw promise they seen in 20 year old Holton.