Sky Sports sources understand that Newcastle have made a late bid for Birmingham's Liam Ridgewell.
A host of top-flight clubs have been linked with the defender, who handed in a transfer request on Tuesday in a bid to force a move away from the Blues.
QPR were reportedly considering a late bid for the 27-year-old, while Swansea are believed to have had a loan request for Ridgewell rejected earlier this week.
But Newcastle have emerged as a late suitor for the player, who would provide versatility to the Magpies' backline given he can play in central defence as well as left-back.
Birmingham were reluctant to part with Ridgewell, turning down his transfer request earlier in the week.