Tottenham boss Andre Villas-Boas hopes to make one striker signing this week.
Villas-Boas said: "I can give you an example - last year we had two strikers in Chelsea of great dimension.
"Tottenham had three strikers of great dimension - Adebayor, Defoe and Roman Pavlyuchenko.
"Normally there is one that doesn't get enough time that he feels he should be credited with.
"That's not because you don't rotate enough, but because when you play a system with one striker it is very difficult to get the third one to play enough.
"Normally on my teams I like to promote the third one as a young striker who is competing for that place a bit more aggressively."