Chelsea boss Jose Mourinho accepts his strike-force is entering the veterans' stage.
Chelsea's present strike options are Fernando Torres, Demba Ba and Samuel Eto'o, who are aged 29, 28 and 32, respectively.
"All our three strikers, no-one is the future for 10 years, like we have in other positions," Mourinho said.
"Not one of them is the player for 10 years like (Eden) Hazard or like Willian or (Andre) Schurrle or all these guys.
"Normally one of these three strikers would be replaced for somebody with this perspective of long term and this perspective of evolution."
