Real Madrid president Florentino Perez has described Manchester United's handling of the David de Gea transfer saga as a "disgrace".
The goalkeeper looked set to complete his proposed move to the Santiago Bernabeu at the beginning of the week after the Red Devils accepted a £29.5m bid on transfer deadline day.
However, the deal eventually collapsed in the final minutes due to a delay in necessary paperwork, with each club blaming the other for failing to push through the documents.
United went on to claim they had even suggested Madrid appeal to have the transfer pushed through regardless, but Perez says he is not fooled by the Premier League club's underhanded tactics, and has laid the blame largely at the feet of United chief executive Ed Woodward.
"They said that just to get in good (with the supporters). It is just to say we offered them that but Real Madrid rejected it," he said.
"But the paperwork arrived later. It was out of time. We sent to La Liga anyway, we spoke with the president and with a chief from UEFA but we saw it was impossible. Their offer (to try to help us to get the deal done) was from someone without experience.
"I think they didn't have bad intentions. I think they just lacked experience. It already happened to us (two seasons ago) with Fabio Coentrao and also happened to Athletic Bilbao with Ander Herrera (the summer before the Spanish midfielder made the move when David Moyes was in charge).
"When this happens more than once and you see that all the operations that, according to the media, they have tried to do during the summer (which didn't go through), one believes that this happened because it is a new team with no experience."