Sweeney has struggled to make an impact at Elland Road since joining in January 2008 and will help Mike Newell's side fight relegation from the Football League.The 24-year-old will go straight into the squad to face Gillingham on Saturday along with former Leeds goalkeeper Jonathan Lund.Lund was recently released by United boss Simon Grayson and has penned a deal with the Mariners until the end of the season.
Source: Team_Talk