Born in Houghton-le-Spring, the 19-year-old was named on the bench of a senior matchday squad for the first time during Newcastle’s 2023/24 UEFA Champions League clash against AC Milan at the San Siro.
Harris, who joined Newcastle's Academy in 2017, was handed his under-21s debut in an EFL Trophy clash against Wrexham as a 16-year-old, playing in front of almost 8,000 fans at the Racecourse Ground.
A first-team debut followed in May 2024, coming off the bench in a post-season friendly against the A-League All Stars in Melbourne, before picking up the Wor Jackie award - presented to the club's young Player of the Year.
Born on December 16th, 2006 - when Patience by Take That was number one in the UK charts - Harris enjoyed a first taste of senior football on loan at NIFL Premiership side Coleraine FC during the first half of the 2025/26 campaign, keeping seven clean sheets in 21 league appearances.
Reflecting on his loan spell at Coleraine, Harris said: "It's been a big test and I've had to go through some good spells of playing, keeping a streak of clean sheets along with bits of adversity after having a shoulder injury.
"I've learnt a lot about myself in the last few months that I didn't think I would in terms of my game. I've become more communication-orientated during matches because of how important it is. As the loan progressed, I feel like I'm growing in every game and training session, which will only help me to become a better player.
"I've also got a lot more gratitude for the things I had back home such as my parents and everything at Newcastle such as the staff and facilities. I've learnt how to fend for myself, learning how to cook, clean and do all of the things I wouldn't have done at home.
"I'm becoming more mature as a person after being in a men's dressing room. I don't think the lads see me as a 19-year-old but I settled in quickly and, as the games have went on, I've built some credit and gained the respect from my teammates."
If Harris makes his Magpies bow this evening, he will become the club's youngest goalkeeper to play in a European fixture since Tim Krul in 2006, who made his Newcastle debut during a UEFA Cup clash against Palermo a month prior to Harris' birth.
