Wigan boss Paul Jewell is adamant that he will adopt a meticulous approach to spending a possible £25m reward for winning promotion to the Premiership.
Latics chairman Dave Whelan says he may have to "look at spending £10m to £25m" to keep the club in the top flight.
And a jubilant Jewell said: "When you have got the money to spend you have to spend it wisely.
"If you don't and you bring in the wrong type of players you get the sack. Money itself brings pressure."
Jewell has been told to choose a "three, four or five-year contract" by Whelan, who has already spent up to £75m to make his "impossible dream" come true and steer the club into the Premiership.
Jewell added: "We need to strengthen. There's no doubt about that but we're just going to enjoy the next couple of days and then take stock.
"We've got to make sure we sign the right players and they are coming to the football club for the right reason.
"That doesn't mean the players who helped us this season are going to be wiped out but we'll have to improve the squad."
Jewell hailed Wigan's promotion to the Premiership as an "unbelievable achievement" after the 3-1 win over Reading booked their top-flight status.
Last season they missed out on a play-off place on the final day of the season after losing to West Ham.
Whelan could not disguise his joy at Wigan's elevation to English football's elite and has set his sights high as he closes in on securing a new deal for Jewell.
"I have to say the manager we have got is a very special person and I am talking to him about the extension of his contract, which I hope we will agree next week," he said.
"It's basically agreed but he wouldn't sign an extension until he knew which division we were in. He is that honest and that kind of man.
"Paul Jewell will remain with this club as long as one of the top six clubs in the land don't come in for him.
"Now if one of those clubs come in for him I will say 'good luck, you deserve it, go and do it'."
Whelan added: "If we don't get the players we require we will fight for our lives at the bottom end of the league because it's a tough and good league.
"But we want to be in the middle section and that's the ambition, to consolidate."