"We haven't done, nor will we do anything against the wishes of a club that we consider a friend like Manchester United," Calderon told his club's official website.
"Our relationship with Manchester is magnificent and we will not do anything that would violate the will of a team, just as we would not like that done to us.
"We know Manchester doesn't want to sell and we have nothing to say. It's a problem between the player and his team."