Complex sentence: Having previously been manager of Cambridge United between January 1978 and December 13 1983, and Brentford, he was appointed Millwall manager in May 1986 following the departure of George Graham to Arsenal.
Split into simpler sentences: Having previously been manager of Cambridge United between January 1978 and December 13 1983, and Brentford. He was appointed Millwall manager in May 1986 following the departure of George Graham to Arsenal.