MELBOURNE, AUSTRALIA - JUNE 11: Tom Williamson of the Blues in action during the 2017 AFL round 12 match between the Carlton Blues and the GWS Giants at Etihad Stadium on June 11, 2017 in Melbourne, Australia. (Photo by Adam Trafford/AFL Media/Getty Images)

Carlton has secured the future of three young defenders this week, with the trio all signing two-year extensions to their current deals.

First-year defenders Tom Williamson and Harrison Macreadie have both signed on until at least the end of the 2020 season, while Irishman Ciaran Byrne will continue with the Blues until 2019.

Carlton’s head of football Andrew McKay said the Blues were thrilled to have agreed new contracts with the trio, in an exciting move for the club going forward.

“On-field, Ciaran, Tom and Harrison have an important role to play in the future of the Club,” McKay said. 

“Harrison and Tom have both shown exciting signs after making their senior debuts this season. They are young and still developing their game but their attitude suggests they will continue to improve over the coming years.

“Ciaran has been meticulous with his commitment to rehab following his ACL injury last year and we are delighted that he is now back playing football. I’m sure he will be back in the senior side before too long.

“We believe all three players will be long-term prospects for us, and it’s pleasing to see the belief they have in the direction of the Club’s future by wanting to continue on the journey with us.”

Macreadie made his debut for the Blues in round one against Richmond and has gone on to play six games in his first season at the club, while Williamson debuted in round three against Essendon, and has played all 10 matches since.

Byrne’s first appearance for Carlton came in round three of 2015 against Essendon, and played 11 matches in the first half of the season last year before rupturing his ACL.