Chelsea are eager to bring in attacking options in January, with Watford's Richarlison and West Ham's Andy Carroll shortlisted for such a task.
Though having the joint best defensive record in the league, the Blues have scored the fifth most goals - 41, level with Arsenal - with the last three matches all resulting in goalless stalemates.
Liverpool's big win over leaders Manchester City has since seen Chelsea drop down into fourth, as Antonio Conte's men were unable to shine against Leicester City at the weekend.
Consequently, the London side are keen to bolster their attacking prowess and ease the stress on the misfiring Alvaro Morata.