Fiorentina winger Juan Cuadrado has made it clear he wants to join Chelsea, Sky sources understand.
Manager Sam Allardyce admits he is unsure whether Darren Fletcher will choose to join West Ham or another club.
The 29-year-old Brazilian joined the Rossoblu on a four-year deal in 2009 but after scoring just 15 league goals for the Sardinians it appeared he would move on in the summer.
However, a statement published on cagliaricalcio.net read: "Cagliari announce that the player Miguel Anderson Da Silva 'Nene' has renewed his contract with the Rossoblu for another year."
Nene's best individual contribution to the Cagliari cause came in December 2010 as he scored a hat-trick in a 3-0 home victory over Catania.