Career
Doncaster Rovers
Glasgow-born McKay began his career at Doncaster Rovers with twin brother Paul when he was 9-years-old. In 2014, he played in the Gothia Cup with under-18s side. Scoring in wins over Malmö FF"s academy and Beşiktaş Academy as Rovers progressed through to the knock-out round.
The Scot scored the equalizer in the next game versus IF Elfsborg Academy before being eliminated on penalties.
He caught the attention of First-Team Coach Paul Dickov with an impressive goal-scoring record in the youth team, including scoring a hat-trick against recent champions Norwich City in the FA Youth Cup. Whilst at the academy, he gained interest from Premier League and Championship sides, such as Everton, Crystal Palace and Sheffield Wednesday.
He made a further three appearances in the same season before joining Ilkeston on loan in October 2015 to gain first team experience. Leeds United.