Barcelona and Manchester City are locked in talks over Joao Cancelo.
While a loan move to Barca has been approved by City, disagreement persists over the price of a permanent option.
Sport says Barca do not want to go higher than 25m to buy Cancelo outright. But City are demanding a commitment to 45m.
Talks between the two clubs will continue today in search of a compromise.
For his part, Cancelo has insisted a move to Barca is his priority.