Arsenal manager Arsene Wenger hopes to be able to announce a new signing before the end of the month.
Wenger has already said he will only make minor changes to his squad before the start of next season after being content with the Gunners' tally of 83 points this term.
He told the club's official website: "I know what I want and I am very confident.
"I hope to turn that around in the next two or three weeks. But the fans should be re-assured by what they see.
"It would be better to buy someone who has played in England because they are less risky. But it costs more money if they are from the Premier League, so maybe I will try to do both."
Meanwhile, Wenger believes Theo Walcott can become a regular starter next season after the teenager continued his fine recent form by scoring the only goal of the win at Sunderland on Sunday.
The Frenchman added: "I think he started the season as a promising young player and he finished it as a guy who can fight for a regular place in the side.
"The next step for him is to be a player who can produce regular performances and efficiency. I am very hopeful he can be that.
"Sometimes he can be too much 'in and out' of the game still but we have seen when he is in, he is completely in now."