Sky are linking Charlton with Middlesbrough defender Rhys Williams. He is certainly being sent out on loan to recover match fitness. However, a number of other Championship clubs from 'oop north including Preston and Rotherham appear to be in the running: Rhys Williams
Wikipedia states: 'Rhys Williams (born 14 July 1988) is an Australian professional footballer who plays for English club Middlesbrough and the Australia national team. A very versatile player, Williams is adept at playing as a centre back, defensive midfielder and right back but has played in virtually every out-field position at some point for Middlesbrough including more attacking roles. In August 2012, Williams was made club captain.'