The Turf Moor boss said: "He's going to sign for a year and we're very pleased with that.
"We've been light in that area throughout pre-season and he will bring great experience and great strength to our back four.
"Steven Caldwell went off injured today and in the light of that we're delighted to bring David in.
"He's obviously going to be short of fitness and as you get older, it gets harder.
"But he will bring great experience to the dressing room and we may throw him in at the deep end on Tuesday against Grimsby in the Carling Cup. Hopefully he will swim."