I think the attachment to him comes from him being 90% of the our fan base's "best ever player" (or potentially that), to have played for the club and moved on. The most expensive former player. The best goalscorer on the european stage. Potentially and it's interesting to people.
I want him to go on and win every thing he can, personally. Cov will always be mentioned when speaking about his career and that keeps us in the news. And that's why I'm interested in where he goes next. I doubt many are emotional about it, that's hyberbole. It's interesting because we are a massive part of his journey and he deserves a shot at proving just how good he is.
And don't mistake his agents actions for his.