I'm not worried about him spending that amount whatsoever, but it's highly unlikely he will, and the reason why (as I've said) is because it doesn't represent an effective strategy for a side like us.
The most we've spent on a fee so far this summer is 400k, and we've brought in some quality additions. You really think Sadler is going to pay 5-6 times that on 1 player? And nor do we need to (as the quality of those signings proves).
Several quality additions at lower (but still fairly significant) prices is the way to go at this level. When we're in the Championship, maybe that strategy makes more sense, as it should then become somewhat easier to hold onto our valuable players in the long term anyway.
You can also guarantee that if we spend say £2m on Taylor (which would undoubtedly blow the entire budget we have left) and he does his ACL next week, everybody saying we should be signing him would then be complaining that we've blown all the budget on 1 player, and then expecting us to go and fork out more money on a replacement.
Spending £2m on 1 player at this level for a club of our size just isn't logical, simple as. And similar to what we've all said regarding Charlton signing Apter this week, it's potential you're paying for and it represents a huge gamble. I don't want to gamble, I want to get out of this crap league. Give me 3-4 signings of proven quality League 1 players over 1 wow signing any day of the week.