At league one level, and if he's asked to play as a 10 and excused any defensive responsibilities McKay could well shine. He has talent for sure. If talent was the sole consideration he could play in the Premier League. If graft was the only consideration then I think he'd struggle to get into a National League outfit.
This says all you need to know about his “attitude” to being a professional footballer~~>Senior career*YearsTeamApps(Gls)2012–2017Rangers103(12)2013–2014→ Greenock Morton (loan)18(3)2014–2015→ Raith Rovers (loan)23(1)2017–2018Nottingham Forest26(5)2018–Swansea City34(2)2020–→ Fleetwood Town (l0(0)
https://www.rangersnews.uk/news/barton-lavishes-praise-on-former-rangers-winger-after-fleetwood-display/Joey's pleased to have signed him