Blues set sights on big-name addition in January.
The Blues could do with strengthening up front at the moment after a difficult start to the season, which has seen Diego Costa struggle for form and the likes of Radamel Falcao and Loic Remy unable to provide much in the way of an alternative.
Lacazette was one of the best strikers in Europe last season, scoring 31 goals in 40 games to earn a call-up to the French national team and attract big interest from a number of top clubs.
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Chelsea transfer rumours
According to Fichajes.net, Chelsea will try again to bring the 24-year-old to Stamford Bridge, having also considered a move for him in the summer transfer window.