Chelsea manager Jose Mourinho has said the club will try to sign a new striker until the transfer window closes.
Mourinho, whose second spell as Blues manager started with a 2-0 win against Hull, has seen two bids for Wayne Rooney rejected by Manchester United.
"I won't name players who belong to other clubs. We go direct to the club," said Mourinho.
"We will try until the last day of the transfer window to add a new player to the squad. A striker."
Chelsea have already recruited Andre Schurrle and Marco van Ginkel, while fellow midfielder Kevin de Bruyne has returned from a loan spell with Werder Bremen and striker Romelu Lukaku has come back to the Blues after a season-long loan at West Brom.
Mourinho added that he wanted to sign more players before the deadline on 2 September, adding they will do it in a proper manner.
"If we have to make a bid we make it in an official way, we don't speak to players and try to influence them," he said.
The Portuguese celebrated his return to Stamford Bridge as Chelsea beat newly promoted Hull with goals from Oscar and Frank Lampard.
England midfielder Lampard also had a penalty saved by Hull goalkeeper Allan McGregor, and an improved performance from the visitors denied Chelsea any goals in the second half.
"Maybe we couldn't do the same [in the second half] as the first," said Mourinho, who led Chelsea between 2004 and 2007.
"The first half was too intense, creative and dynamic for the first game of the season. We started in an amazing way and not even a missed penalty could break our intensity and quality. It was fantastic."