塞尔：对阵曼城的比赛不会决定阿隆索的命运，除非被大比分血洗（塞尔：对曼城一役难定阿隆索去留，除非遭遇大比分惨败）

Translating and clarifying information

I need to provide an English translation of a comment by Atlético's president regarding the match against Man City. It seems the match won't determine Alonso's future unless there's a heavy defeat. This could be risky.

I’ll clarify if they need a translation, source verification, or background comments. The original Chinese statement is straightforward, and I can quickly check facts online. I’ll offer a clean translation and ask what the user would like next.