Swansea are insisting on £18million for defender Joe Rodon who is the subject of a £7m offer from Tottenham.
The centre back is a product of the Swansea academy and broke into the first-team in 2018 and helped Steve Cooper's side reach the Championship play-offs last season.
Tottenham's £7m offer is understood to have been rejected with Leicester also said to be interested in making a move for the defender before Friday's EFL transfer deadline.
Jose Mourinho has already brought in defensive reinforcements with Matt Doherty and Sergio Reguillon joining in the summer.