Leicester manager Brendan Rodgers says Everton's plight in the Premier League this season is proof that spending money does not always lead to results.
Everton are just three points clear of the relegation zone despite investing more than £500m on players over the last six years.
They host Leicester on Wednesday.
"It's been well documented there's a lot of money been spent ... but if it doesn't all join up, then it doesn't really matter," Rodgers said.
"It's probably frustrating for the supporters, I'm sure, because it's a huge club and the investment's been huge and they probably wanted better.