Lee to remain with The Cobblers for the remainder of the season





Martin, 28, has made two appearances for Chris Wilder's side since joining them in an initial one-month move during January.





Northampton are currently top of the table and Martin will hope to play a big part in their bid for promotion to League One between now and the end of the 2015/16 campaign.





Millwall winger Lee Martin will spend the rest of the season at Northampton Town after extending his loan deal with the League Two club.