The 15-year-old, who reportedly attracted the interest of Liverpool and Blackburn Rovers, is delighted to have agreed terms with City and confessed that it is a dream to play in the top flight.
"This is a childhood dream coming true." Celina told Drammens Tidende. "I believe it will be very good for me."
The young forward is set to join up with Roberto Mancini’s side in 2012 once he has completed his schooling in Norway.
The new signing represents a change from the usual big-money signings that fans have come to expect at the Etihad, such as the likes of recent acquisitions Samir Nasri and Sergio Aguero.
However, the City faithful will be happy to see Mancini looking to the future to ensure the continued success of the club for many seasons to come.
Manchester City currently sit at the top of the Premier League table after a comprehensive 4-1 victory over Aston Villa on Saturday.
The club will be hoping to continue their unbeaten record in the Premier League in their derby clash with Manchester United at Old Trafford on Sunday.
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