Clement admitted the volume of deals Swansea were working on during deadline day ensured Yiadom did not join at the end of August, but he has not ruled out the possibility of resurrecting the move in January.
"It was too close to the deadline. We tried to get it over the line, but there just wasn't enough time," said the Swans boss.
"That's the thing with the transfer window, you're trying to get so many things over the line that there must be a pecking order. That one unfortunately just got away from us.
"But it is possibly something we could revisit in January. He is a player we like so we will have to see."