Lincoln City have signed midfielders Dany N'Guessan and Paul Green on free transfers from Rangers and Aston Villa, reports BBC Radio Lincolnshire.
Frenchman N'Guessan, 19, spent the first half of the season on loan at the Imps' League Two rivals, Boston United.
He has agreed a two-and-a-half-year contract at Sincil Bank.
Meanwhile, 19-year-old Green, a former England Under-18 international who had not played for Villa's first team, has signed a contract until June 2009.
Former Barnsley midfielder Richard Kell, 27, has left Lincoln after the Imps opted not to extend his short-term contract.
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