Footballers are transitory and always will be. We’ve all seen the good ones come and go - well, go mostly - yet the club and fans endure.
It’s no big deal if Harry goes too.
The club will endure, but is likely to be shitter on the pitch and score less goals. Less fans will go as a result and those that do would will be less entertained.
Pretty much everyone that pays their money and time to watch us week in week out, home and away, would want him to stay. Any replacement we get will almost certainly be boring in comparison even if, and it's a big if, they score as many goals.