Given he's our most valuable asset (age, contract length, talent), and has a decent chance of being a near ever-present in the best-performing Saints midfield in at least a generation, then any interested parties would need to show us the fucking money. He's got the physique and the passing range, he can strike a ball, and his game awareness is improving all the time. Still prone to some daft moments but those will disappear with experience.
I know this is the internet and people chuck stupid valuations around like confetti, but if he's not at least a £1m player then we're never going to have one.