Everton manager David Moyes has confirmed that he is in the market for a new striker, following the exit of James Beattie and James Vaughan's shoulder injury.
Beattie has joined Sheffield United in a £4million deal, while Vaughan will be out for several months, leaving Moyes short of options in attack.
He has been linked with a move for Middlesbrough's Yakubu, but Moyes says he has several options at his disposal.
"We didn't think we were going to need a centre-forward a couple of weeks ago, but since then we've lost James Vaughan," Moyes admitted.
"I still thought we could have coped, because I would have played Tim Cahill as a centre-forward, but now we've lost him as well.
"We've tried to go for two or three players in the last week or two and we're still trying.
"We will be trying to improve the squad, but it would be wrong to say anything is completely done at the moment.
"We are looking and things have changed slightly for us and we hope to do some business before the end of play."