Complex sentence: He then signed for Sheffield Wednesday in 1908 making his debut against Leicester City on 1 September 1908 and went on to make 44 league appearances scoring no goals until being signed by Chelsea in 1910.
Split into simpler sentences: He then signed for Sheffield Wednesday in 1908, making his debut against Leicester City on 1 September, 1908, and went on to make 44 league appearances. McConnell scored no goals until being signed by Chelsea in 1910.