Real Madrid are refusing to sell Dani Ceballos on the cheap.
Zidane has made no secret of his interest in countryman Pogba, who is eager to leave Manchester United this summer.
But United are digging their heels in and will not settle for anything less than £180m.
Tottenham have been tipped to make a loan move for 22-year-old Ceballos, with Arsenal also believed to be monitoring the situation.
But Real have come to the conclusion they can't find anyone better than Ceballos at a reasonable price.