Chelsea are highly unlikely to sign both Morata and Lukaku, but have stepped up their interest in both players over the last week as they bid to land one big striker.

Gonzalo Higuain is another forward Chelsea are monitoring, but Napoli are trying to agree a new contract with the Argentine whose buy-out clause is set at £72m.

Chelsea will sell Loic Remy, who made only four appearances after the January transfer window in which he rejected a move away from the club, and the loan deals for Radamel Falcao and Alexandre Pato will not be renewed.