"I don't have regrets. It was obviously exciting to be chased by Manchester United but growing up in Scotland I think many people see Celtic as a bigger club and it's a massive pill to get attracted to Celtic as well.
"I went down [to Manchester] for the week to check it all out and I was offered a contract. I came pretty close to signing with them. To turn it down was obviously a massive decision in my life. It seems like a lifetime ago now.''
A lot has happened since.
He became the youngest person to play for Celtic when he debuted aged 15 years and 273 days old but struggled to break into the first team. He went on loan to Dunfermline in 2007/08 and was eventually released by Celtic in May 2009.
McGlinchey resurrected his career in Australia in the A-League and also switched international allegiance to New Zealand - he played youth football for Scotland - helping them qualify for the 2010 World Cup.
Last season was his best when his Central Coast Mariners side won their first title and the diminutive 26-year-old finished fourth in the voting behind Rojas for the award as the league's best player. He scored six goals in 26 games, set up seven others and became a linchpin in the middle of the park.
"I have always been confident in myself but [Mariners coach] Graham Arnold has figured out how to get the best out of me,'' he said. ``He fills me with all the confidence I need to go onto the pitch and play and it shows week in, week out. He knows what he's going to get out of me now and I know myself as a player. I am comfortable with how I am playing.
"As a team and individually, if I had the same season again [next season] I would be happy. I just want to play every minute of every game, score goals and hopefully finish at the top of the table.''
His ambitions will be similar next weekend but, deep down, he might again contemplate what life might have been like if he had joined Manchester United.