Everton boss David Moyes admits even £100million may not guarantee getting the Toffees into the top four of the Premier League.
Moyes' squad have stayed in London this week after the reaching the FA Cup final, and next up is a dress rehearsal of the showpiece when they face Chelsea at Stamford Bridge on Wednesday night.
While Chelsea are bankrolled by Roman Abramovich, Moyes' success has been on a budget.
"We have a long way to go and it will be very hard to compete with the top boys, we know that," Moyes said.
"You could give me £100million and it might not get me any closer, who knows? The one thing we have got is big hearts and character and we want to keep improving.
"Everyone would like more money but the majority of managers in football don't work with money, so you have to be able to work without.
"We've been lucky that we've been given every penny that they could give us. As you see, if you get the right players in and they are hungry for success then it can happen."
Moyes wants to invest this summer as this season he has suffered a number of injury setbacks in his squad, with Aiyegbeni Yakubu, Mikel Arteta and Victor Anichebe long-term casualties.
But he will be looking for players that will buy into the Everton way of working hard for success as they have done this season, with every chance of a high-placed Premier League finish to go with their FA Cup final.
"It is an achievement for the players, through adversity and injuries to several key men," Moyes said.
"People have come into the team and taken their chance. Not only taken their chance, but they've pushed on.
"It would be great to finish in a really good league position, that is what we are trying to do."
Moyes feels chairman Bill Kenwright also deserves credit for their progress.
"I'm really pleased for Bill because he has put a lot of time and effort into Everton and when we look at football, of all the people that come into the game and buy clubs," Moyes said.
"If you are a true football supporter you should be pleased for Bill Kenwright because he has worked really hard and given everything he can.
"He's had to suffer a bit because the Everton fans are unforgiving - they want success like every other group of supporters."
The contrast could not be greater when comparing Everton's situation to Chelsea's.
Guus Hiddink has come in and changed their results but Moyes feels it is the multi-million pound players who are ultimately responsible.
"Have Chelsea not got one of the best squads in the division?" he said.
"You would expect those players to be where they are.
"The manager has to take credit for that. But I think it is more to do with the group of players, they have a strong squad and they are the ones that have to cross the white line and do the job."
Moyes still has deep respect for Hiddink, and added: "I've called him on several occasions for information on Russian players and he was very good in giving that to me. His record in Europe is very good."