I keep banging this drum too but his agent might be selling him the "go on a free and make a fortune" angle but nothing is guaranteed when it comes to Dom, he had 2 seasons of chronic injury problems followed by a season last year that was most notable for going 23 games without a goal. If he repeats any of the last 3 years his value likely drops not improves. No one is offering him a fat contract in 2025 on the basis of a good 2020/21.
Regardless of whether it's us or a move elsewhere he'd be better setting up his future by signing a contract this summer. I don't think any advice he's getting to the contrary is in his best interests.