Bro,,,in todays world $$$$$ rules unfortunatly , and only a few clubs in europe can survive without selling players . Porto is a middle-class club (financially) and can't compete with Chelseas,Madrids , manchesters . Even if Porto sell 2 or 3 of their best players , alot of their nucleus will still be there , and look for porto to make some good signings too over the summer. PS.... word is Porto are looking to get the Greek starting right-back , who plays for Panathinaikos ....in case Ferreira is sold .