Leicester City's owners have learned spending huge amounts of money does not guarantee success, says the club's vice-chairman Aiyawatt Srivaddhanaprabha.
City's owners are estimated to have spent more than £150million since taking over the club from Milan Mandaric in 2010, including the conversion of £103m of loans from themselves into equity and the £17m purchase of the King Power Stadium.
After initially huge amounts of investment did not bring success on the field, Aiyawatt, known as Top, said they had to show patience as it has taken four years to gain promotion.
"We came with ambition and tried to find a way to make the team a success, but you can't take anything for granted in football," he said.
"We can make the team strong but we couldn't predict when it would happen. We have learned that since we came here. We want to build the team and do everything we can to prepare the team."
Top acknowledged the huge investment but insisted he and father Vichai Srivaddhanaprabha had been driven by a love of football.
"I know we have invested quite a lot but we love football and we love the club," he said.
"We try to do everything to support them. We commit everything.
"We didn't have a timeline but now we are there and a success, I am very pleased what we have invested makes people happy in Leicester and makes everyone proud in Thailand.
"It makes King Power the owner of a Premier League team. It is something money can't buy.
"I feel English football is great to watch. To own a club is magnificent for me."
City development squad duo Jacob Blyth and James Pearson have signed new contracts.
Striker Blyth, who had a loan spell at Northampton Town last season, has signed a two-year contract, while defender Pearson, son of City boss Nigel, has signed a one-year deal.
