Middlesbrough boss Tony Mowbray has warned Swansea City off attacking pair Marvin Emnes and Leroy Lita.
Swansea have seen a £2million bid for the attacking pair rejected by Boro, who are anticipating a fresh offer from the Premier League new-boys.
"In my own mind, I think if Swansea have got any real, genuine interest they should let us know," Mowbray told The Journal.
"Maybe that was why their chief scout was there - I don't know. Do they know enough about these players? I'd like to think that they do.
"What I would say is that the closer it gets to the start of the season, the less likely we are to want to let any of them go. There's no fire sale on."
