Derby County have completed the £750,000 signing of Celtic midfielder Stephen Pearson.
Pearson turned down offers from Sunderland, Stoke and Norwich
Pearson, 24, told the club's website he was looking forward to playing for the Championship side after signing a three-and-a-half-year deal.
"I definitely don't see this move as a step down because the Championship is a tough league," he said.
Derby boss Billy Davies said Pearson was a proven goalscorer who could play anywhere in midfield.
Pearson joined Celtic from Motherwell in a £350,000 deal in January 2004 but he has never been a first team regular with the Scottish champions.
I'm looking forward to the challenge and we're aiming for the Premiership
The midfielder worked with Davies when he was manager at SPL side Motherwell and said he was looking forward to helping Derby's promotion push.
"I'm looking forward to the challenge and we're aiming for the Premiership," Pearson said.
"I've had a good day today. I've trained with the lads and enjoyed it.
"I already know Bob Malcolm and Mo Camara from their time in Scotland, so that makes it easier to settle in."
Pearson said the chance to work with Davies again was "a big factor" in signing for Derby.
Davies said Pearson could make a big impact at Derby and hoped he could score goals from midfield.
"He can play central and wide in midfield and is very much capable of scoring goals," said Davies.
"He has a great future ahead of him. Stephen is a great athlete and box-to-box player, very good at joining in the final third."
Pearson's capture brings to four the number of January transfers completed by Derby after signing Gary Teale, Craig Fagan and David Jones.
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