Arsenal manager Arsene Wenger has urged fans to be patient with their demands for a "spectacular signing" this summer.
Arsenal chief executive Ivan Gazidis has indicated that the club have the means to spend big in the transfer market, as they look to build on last season's fourth-placed finish.
And, speaking during the club's pre-season tour of Asia, Wenger is quoted by the Sun as saying: "You all want me to announce a spectacular signing but I can’t do that.
"We are working hard behind the scenes to strengthen the squad but I cannot give you any names.
"The next Premier League season will be very interesting. Many teams can win the title. Chelsea will have a good team and the fact Sir Alex Ferguson has retired brings some uncertainty to Manchester United.
"But Davis Moyes is there and I’m sure they will be candidates to win the league again."
Meanwhile, Alex Oxlade-Chamberlain is optimistic his side can enjoy a positive 2013-14 campaign, particularly as champions Manchester United begin life without manager Sir Alex Ferguson.
He said: "Alex Ferguson was an amazing manager for so many years but he was always going to have to retire at some point.
"He couldn’t have stayed in the game for all of his life and maybe his leaving United does bring a certain amount of uncertainty to the Premier League.
"But I don’t know what the managerial change will bring for United and it’s not for me to say. What I do know is that it doesn’t change the way we approach things at Arsenal.
"The fans and football followers can speculate about United but me and my team-mates just focus on ourselves."