The 17-year-old striker, who has previously been compared to Tottenham legend Robbie Keane, impressed once again for Spurs in their 2-1 defeat to Manchester United in the International Champions Cup.
Parrott, who had made his first senior start for Tottenham in their victory over Juventus last week, was once again given the nod by Mauricio Pochettino against the Red Devils and he impressed by setting up Dele Alli for a superb chance which David de Gea kept out.
Later on, the teenager produced a moment of magic with a beautiful overhead touch on the turn in United's final third, not far from the box, which left veteran defender Chris Smalling bamboozled and beaten.
McCarthy has admitted that Parrott's displays could go on to make him a shoe-in for the Ireland senior setup - providing Pochettino deems him good enough for a place in Spurs' Premier League opener match-day squad.
"If he is playing in the first game of the season, if he is starting and playing for Spurs, he'll have to be a shoo-in for the squad," McCarthy told The Herald. "He's got to be playing really, to play. But if he is in the squad with Spurs with a chance of coming on - Mauricio Pochettino has proved to be a great coach, so I'm not going to be daft enough to suggest he isn't good enough to come and play for us.
"My concern is Switzerland but if Troy Parrott is in and around the (Spurs) first team he has every chance of being involved in that (squad), for sure. If he is playing in the Tottenham team, I'll use him for the first team squad."
Parrott is regarded as one of Tottenham’s most highly rated young prospects, scoring an impressive 15 goals in 12 Under-18 matches last term.
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