Charlton boss Phil Parkinson wants to sign Dagenham striker Paul Benson but admits he will not be in place before Saturday's curtain raiser against Bournemouth.
Parkinson wants Benson, who has hit 82 goals in five years with the Daggers, to boost his attack as he plots a promotion bid.
Arsenal's Emmanuel Frimpong has also been linked with a move to The Valley but Parkinson says he has not enquired about the young midfielder.
"We're working hard, but I don't see anyone arriving before the weekend," said Parkinson.
"Benson is one of several players we've enquired about, but we haven't enquired about Frimpong. He's a good player, but we're focusing on other areas."