Birmingham City set to sign Motherwell goalkeeper Darren Randolph as a replacement for Jack Butland Clark, the Birmingham manager, has made moves to sign Randolph when he becomes a Bosman this summer as he prepares for the loss of Jack Butland. Randolph, 25, has spent the last three years with Motherwell but is poised to join Birmingham as Butland is heading to Stoke permanently after his £3.5 million signing in January. Clark's current No 2 goalkeeper Colin Doyle is also out of contract in the summer and has not yet agreed a deal to stay.