Real Madrid recently spent around £59million on Kaka and have agreed an £80million deal with Manchester United for Ronaldo - a fee that would smash the world transfer record.

Villa has also been heavily linked with a move this summer, with Madrid, Barcelona, Manchester United and Chelsea all reportedly keen on the Valencia hitman, but the fees being mooted in the press pale in comparison to those agreed for Kaka and Ronaldo.

Valencia have now declared that Villa is not for sale, save for the possibility of receiving a huge offer for the prolific Spain international, and Del Bosque believes Los Che are justified in wanting top dollar for their prize asset.

Del Bosque also believes many of his Spain squad should be classed in the same financial bracket as the game's top players.

When asked if he would pay the same for Villa as for the foreign stars that are being signed this summer, Del Bosque said: "I would pay this money for any player in the national team and, proportionately, for a side like Spain's. Because it's fine to bring in figures, but to make a team is difficult."

Former Madrid coach Del Bosque admits he would have preferred it if the big-money transfers had occurred between Spanish clubs.

"I would have liked this money to have stayed in Spain because when it goes outside the country it doesn't return," he said in AS.

"I'd hoped that these quantities would've been invested in transfers between Spanish clubs. It would be good for our football. But still there could be a situation like that this summer..."

Del Bosque's comments follow on from Fernando Torres' recent criticism of Spanish clubs for splashing big money on foreign players but not doing the same for home-grown stars.

"In Spain we still don't value the players that we have. We have the best national team in the world and a lot of money would be spent on our players, but Spanish clubs don't do it. They would only do it for foreign players," Torres was quoted as saying last week.