Swansea City legend Alan Curtis believes defender Joe Rodon is "worth a lot more" than the fee Tottenham paid the Welsh club for his services.
Spurs have signed the Wales centre-back an initial £11m plus add-ons.
The Swans had hoped to get closer to £20m for the 22-year-old and Curtis is disappointed with the fee the Premier League club paid.
"I think £11million maybe rising to £15million is a little bit below what Joe is worth," Curtis said.
"He's certainly worth a lot more money than that."
Rodon joined Jose Mourinho's side shortly before the transfer window closed on Friday and Swans boss Steve Cooper says he was not involved in the decision to sell.