Boro have signed striker Marcus Bent on a two-month emergency loan deal from Birmingham.
Bent has not played for Birmingham this season, having been kept on the sidelines by a recurring hamstring injury.
Birmingham manager Alex McLeish: "Going up there for two months is an opportunity for him.
"When it's time for him to come back, we hope he'll be in great form and pushing for a place in the team.
"He's obviously had one or two setbacks with injuries. But he's a big, strong centre-forward with pace and presence - and when he's on top form he's an asset."