McQuillan spent less than a week at Jarrow before trying his luck at Everton. He met with no success and stayed only a few months with the Toffeemen before joining City.
McQuillan spent eight years with the Club and throughout that time he was a model of consistency and reliability. Making his debut whilst still a teenager the left-back position became virtually his second home and his nimble footed displays earned the respect of both his teammates and opponents. Having mastered his defensive trade over a period of 6 years and 209 League games, he decided in February 1913 to set the record straight 'vis a vis' goals. In the next ten games he scored twice and then rested on his laurels returning to defensive mode before his transfer in June 1914. During WW1 he was employed in a foundry but still found time to help out his former club during the first season of war-time competition making a further 31 appearances for the Tigers. And just to prove that his earlier entries on the score sheet weren't flukes, he scored another two goals. He also assisted Fulham but a serious injury at work was to end his career.