Crystal Palace "bought" their way out of trouble last season by appointing Sam Allardyce and spending in January, says chairman Steve Parish.
Dutchman Frank de Boer, 47, has been named as Allardyce's successor as manager, signing a three-year contract.
The Eagles finished 14th in the Premier League last season after Allardyce joined in December and bought in four new players the following month.
"We can't do that every year, we need to be smarter than that," said Parish.
Palace were 17th in the Premier League after a run of one win in 11 games when Allardyce was appointed.