Manchester City boss Sven Goran Eriksson admits he needs to buy a new striker to replace crocked Valeri Bojinov.
"We didn't want to have to do it but we have to look carefully at the situation because when you have a player who needs this kind of operation and rehabilitation, you can never be sure how long it takes to come back.
"To lose one player for such a long time is a big blow.
"But it is not only a striker, we need one or two midfielders as well to be covered properly."