Villas-Boas insists he will not jeopardise his teamâ€™s ambitions for the sake of an individual.
The Portuguese said: "I have no problem dropping players. You have to persist, but it can never compromise the objectives of your team and the things you want to achieve.
"At the moment, when it compromises the running of the team, it has to come to an end. I donâ€™t have a first-choice striker. We have to make choices regarding what we see in training."