I think Thiago would want more pay, he's in the prime years of his career and one of the best midfielders in the world, he'd never take a pay-cut.
I think Liverpool can't afford his wages and a 30M fee.
A player on 150k a week is on around 7.5M a year, thats approaching 40M before you are even talking about agent fees, and a signing on bonus.
Liverpool I really don't think can pull off Thiago, they couldn't sign Werner, in total the outlay for someone like Thiago would be 50M with all fees, its really not as cheap as just the fee which many people just see, Liverpool will also be looking to renew some of the players in their prime, and they'll be requiring loyalty bonuses in their contracts too.
In the midst of a second wave there's a reason why Liverpool aren't in the market, the board I'm assuming are thinking they won the league comfortably so they don't need additions.
I fully expect Liverpool to finish behind City and Chelsea next year given their lack of depth, and how strong Chelsea are now, Thiago Silva for Chelsea is a big signing in terms of defensive leadership too.