Complex sentence: He began his career with Patrick Thistle in 1934, and although his career was interrupted by World War II, he remained with them when senior football was resumed and then moved south of the border to join West Bromwich Albion for £10,000 in October 1947.
Split into simpler sentences: He began his career with Patrick Thistle in 1934, and although his career was interrupted by World War II, he remained with them when senior football was resumed. McKennan moved south of the border to join West Bromwich Albion for £10,000 in October 1947.