Chelsea captain John Terry wants the club to splash the cash in the summer to strengthen their first-team squad after the Blues landed their first title for four years on Sunday.
Chelsea were crowned champions for the first time since 2006 after demolishing Wigan 8-0 to give them the title by a single point over Manchester United and Terry is desperate to ensure their success is not a one-off.
"We definitely want to do it again but all the big four - ourselves, Manchester United, Liverpool and Arsenal - need to strengthen because everyone has become closer to us," Terry said. "No doubt it will be a busy summer for the big clubs."
He added: "Now I hope to lift the FA Cup to do the double -- going down in history as the club captain to do it means the world to me."
The England defender also believes Chelsea must make sure that Joe Cole and Nicolas Anelka remain at Stamford Bridge.
Both players have yet to sign new deals with Chelsea after the club put a hold on any new talks until after the FA Cup final with Portsmouth this Saturday.
"We have a great squad here, anyway," added Terry. "Hopefully we can keep hold of Joe Cole because he has been key for us with his goal away to Manchester United. Nicolas Anelka will hopefully sign a new deal and we can keep everyone here.
"Last year I spoke to the club about the importance of keeping Didier Drogba when I was negotiating my contract.
"It was key for me and he has been brilliant. I wanted these kind of people to stay. They've been brilliant this year -- Frank Lampard, Didier, people like this are important to the club."
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