Manchester United legend Gary Neville has questioned Chelsea's title credentials.
Neville wrote in the Mail on Sunday: "Can David Luiz be a defender in a Premier League title-winning team, especially if John Terry is missing at times? Is Fernando Torres, who has never won a league championship in his life, a striker who can lead a team to the title? Is having Torres and Daniel Sturridge - a talent but unproven as a centre-forward - enough depth in the squad, given that United have Wayne Rooney, Robin van Persie, Javier Hernandez and Danny Welbeck, while Manchester City can call upon Edin Dzeko, Sergio Aguero, Carlos Tevez and Mario Balotelli?
'And though this might come from my English prejudices, will Mata, Hazard and Oscar get through the slog of this less pleasant part of the season?"