Sky Sports and Team Talk are both reporting that the move for Bell, believed to cost Norwich somewhere between £400,000 and £600,000, has now been finalised.
Bell's move, which beats the likes of Coventry and Leicester to the former Rushden midfielder's signature, was first mooted in May. He had been linked with a switch to Premier League Portsmouth in January, but Luton's financial problems meant a loan to Leicester was more appealing. He has shown admirable loyalty to the Hatters during a fall which has seen them go from Mike Newell's play-off chasers in the Championship to 30 points adrift at the foot of League Two before a ball is kicked.