UEFA president Aleksander Ceferin will insist on European teams receiving 16 slots when FIFA expands the World Cup to 48 teams in 2026.
Speaking at UEFA's Nyon headquarters after a meeting of the confederation's executive committee (ExCo), Ceferin said this was a "realistic" request and the teams should be evenly distributed between the 16 three-team groups.
UEFA gets a minimum of 13 slots in the current 32-team World Cup format but is resigned to the fact most of the new places are heading to the relatively under-represented African and Asian confederations.
Some within European football have said three extra places should be a minimum requirement but UEFA's leadership has a clearer view of the global landscape and knows three extra places is the best deal it will get from FIFA.
"I am very pleased that the executive committee gave a unanimous backing to reforms I consider essential for the strengthening of UEFA and which formed a key pillar of my presidential manifesto," said Ceferin, who was elected in September.
"I am convinced that our member associations will also endorse these good governance proposals to create a stronger and more transparent governing body for the good of European football."