要点：韩足协人士称正考虑与日本联办亚洲杯，理由是联办可分摊场馆改造、赛事运营与安保等成本，减轻财政压力。

Providing translation and context

I can offer a quick English translation and a bit of context regarding the Asian Cup hosting situation.

First, I'll provide a concise translation of the proposal to co-host with Japan, highlighting cost-sharing arrangements. Then, I'll outline possible implications like logistics, fan travel, and political sensitivities.

I could ask what the user is interested in, like a deeper analysis or historical context on co-hosted tournaments. I’ll draft a concise summary in both English and Chinese!