Manchester United have finalised the deal to sign Celtic’s Republic of Ireland midfielder Liam Miller.

The 22-year-old has agreed a deal which will see him move to Old Trafford on 1 July.

Miller said: “As a young boy I only supported two clubs, Glasgow Celtic and Manchester United.

“I am honoured to have played for Celtic for six years and now I look forward to joining Manchester United.” Miller added:

“It’s very exciting and is going to be a challenge to play for one of the biggest clubs in the world.”

United manager Sir Alex Ferguson said: “We recognised the potential of Liam, he has had a great season at Celtic. He is very much part of our progressive thinking of developing a young team over the next few years.”

Old Trafford chief executive David Gill added: “I am pleased to have Liam joining us, it focuses our continued commitment to bring in young players for the future.”

The Cork-born midfielder broke into the Celtic first-team this season. He has been a regular in the Ireland Under-21 side and was called up to the full squad for the friendly against Canada in November.