Chelsea are keeping close tabs on Porto striker Jackson Martinez and Galatasaray forward Burak Yilmaz, according to the Express.
The Blues are reportedly monitoring the two strikers - and may launch an official bid for one of them in January if Fernando Torres, Samuel Eto'o and Demba Ba continue to struggle.
The three strikers have failed to score a Premier League goal between them so far this season, while the club's youngest forward Romelu Lukaku has scored four goals in three matches since being loaned to Everton for the season by Jose Mourinho.
The Chelsea manager may be put off by Martinez's £35m price tag, but he is believed to be a keen admirer of the Colombia international.
Burak, on the other hand, could be available for much cheaper. The 28-year-old scored 32 goals in 39 matches for Galatasaray last season, including eight in the Champions League - the same number of goals as Barcelona superstar Lionel Messi netted.