Irish defender Kyle McFadden joined Norwich City's Academy as a first year scholar in the summer of 2011, having impressed in a trial in the Clydesdale Bank International Tournament in Guernsey in April 2011. Formely with Irish side Swilly Rovers, McFadden had trialled with Aston Villa, Falkirk, Burnley and Blackburn whilst also interesting Leicester. He had been capped at Republic of Ireland Under-16 level whilst with Swilly but gained Under-17 caps at Norwich, the first of the latter coming in September 2011 when he played 90 minutes for Ireland's Under-17s in a 2-0 defeat in a friendly to Serbia.

McFadden played in both FA Youth Cup semi-final matches against Notts Forest which the Canaries won to progess to the FA Youth Cup final. He also played in both legs of the final which the Canaries won 1-0 and 3-2 against Chelsea to secure victory in the FA Youth Cup for the first time in 30 years.

He was part of the Norwich City Under-21 Development Squad but made his full debut in the Capital One Cup against Crawley on 26th August 2014, playing the whole 90 minutes

He was released by Norwich at the end of the 2014/15 season but later played for Ireland's Under-21s.

On 15th October 2015, Kyle signed for the Orlando City 'B', the USL affiliate of the Orlando City Major League Soccer side.

In December 2016, Kyle signed for Irish side Sligo Rovers ahead of the new League of Ireland season in which Sligo will hope to challenge Dundalk for the title. Rovers' boss Dave Robertson said “Kyle is an excellent defender first and foremost, that is the reason why we have signed him. I have seen him play and he is a defender with tenacity, a willingness to defend and good ability on the ball. He is also a very strong leader. He is someone I think can come in and do really well straight away. He has vast experience from his years with Norwich City, where he captained the youth team. He has spent the last couple of seasons in Orlando gaining more experience. He is from Donegal and will be returning to live here with his wife. He will come here ready to hit the ground running. I am looking forward to working with him. He signs here with a very good pedigree. He has a maturity beyond his years. He will add to the squad and its dynamics. As a defender he has good pace so he can defend against the quicker players but is also strong and proven against all tops of forwards.”

On 4th August 2020 social media was speculating that Kyle was in discussion with Kings Lynn Town, newly promoted to the National League, over a return to Norfolk. This finally materialised on 20th November 2020 with his family moving back to Norfolk and his wife taking up a new role in the NHS. Director of football Robbie Back said: “We are delighted to get this one over the line after being in contact with Kyle for several months. Ideally we would have loved him to be here at the start of the season but that was not possible as he still had his commitments with Sligo and we had to respect that. We wanted Kyle as we thought of him highly, so we were prepared to wait for him to be available. Kyle will bring experience and leadership qualities into the dressing room and he already knows most of the squad which will help him settle in quickly. It really is a great signing for the football club and our supporters.”