Norway international Thomas Rogne admits it is a dream come true to sign a long-term contract with Celtic.
The 19-year-old defender has penned a three-and-a-half-year deal with Tony Mowbray's side after sealing his transfer from Stabaek.
Rogne told the club's official website: "I'm absolutely delighted to sign for a club of Celtic's stature. It really is a dream come true to join such a famous club.
"I've already joined in training with the first team for the last few days and I've received a great welcome and have enjoyed very much working with the manager and players at Celtic.
"The Celtic first team is where I want to be and I'll be doing my very best to try and make an impact and ensure that I can achieve this as soon as possible."