If we'd spent last season not getting promoted from the championship ( or league one), we'd think £30 million was a right touch.
I can't say that I have any idea what players are worth these days. Apart from definitely not as much as they go for.
Brennan is our most saleable asset. For a club that needs to trade this season, and spent too much last season, he seems to me the most likely to contribute positively to the bottom line.
The 'potential premium' window is generally a quite narrow one. eg Ollie Burke. Brennan is a brilliant young player, but he's far from a complete one, and it's not impossible for us to play without him.
I'd rather keep him. But not at the cost of being relegated with a points deduction.