: Netherlands boss Louis van Gaal wants Portuguese referee Pedro Proenca to allow water breaks during his side's World Cup last 16 encounter with Mexico in Fortaleza on Sunday.
Temperatures for the 1pm kick off local time (1600GMT) are expected to reach 30 degrees Celsius with intense humidity also likely to drain players on both sides.
"We hope that we get breaks to drink, otherwise we will put bottles around the pitch for the players," said Van Gaal, who will take over at Manchester United after the finals.
"Dehydration is an element we have looked at in our training. Every people is different, but some can lose up to four kilos during the match, so you have to keep them hydrated as much as possible.
"We hope that the referee will referee in a sensible way."
And Van Gaal admitted that the heat and humidity would be an advantage for the Mexicans at a World Cup where teams from central and south American sides have generally outperformed their European counterparts.
"That is the reason we tried to get the players as fit as possible. I am quite conscious that it will also affect he Mexican team, but they are much more used to it."