5. David Luiz to Barcelona

According to French newspaper Lefigaro, Chelsea could sell 26-year-old centre-back David Luiz to Barcelona for 35 million euros (£29m), after having rejected the Catalan club’s earlier offer of 25 million euros (£21m) last summer. While David Luiz is its priority, plan B for the Catalan club include Thomas Vermaelen (Arsenal), Eliaquim Mangala (Porto) and Iñigo Martínez (Real Sociedad).

Likelihood: 50%