Birmingham City must sell to buy Norwich City striker James Vaughan.
The Mirror says Vaughan is available and currently close to a switch to Huddersfield, but he was born in the Midlands and a move to the Blues appeals to him.
Clark is trying to raise £1million to make the deal happen - and beat his old club to the capture - by selling Nicola Zigic.
The towering target man has been cleared to go back to Spain after spending the most successful spells of his career in La Liga.