Oh I know that. His average salary at time of signing that deal was 20 million if I recall correctly. Still one of the lowest or the lowest for starting QBs outside rookie deals. Even with that raise he was still near the bottom of the pay scale. Jimmy G was getting paid $27MM around that period (2018 contract) when Brady settled for $20MM. I remember that purely because he was a former Pat.
And my memory was accurate.
That said all players rework their contract on the last year when the pay is that low and they are players the team wants to keep.
Brady always got extended with at least 1 year left on his contract except in 2019 when Pats decided not to. The increase was clearly to appease him for not giving him the 2 year extension he wanted, get him to camp and put a stop to all the contract talk. Brady requested the no tag because he got tired of not getting the 2 years he wanted. It was at this point that Brady decided he was done as he said on the Howard Stern show a year or 2 later.
I don't care to rehash this but really gets on my nerves when people just decide to ignore what happened and parrot the PR line of Brady left because he wanted to.
He was tied for 6th with Drew Brees among quarterbacks at 23 million. He was 4th highest compensated player in the league if counting the $12million he had for endorsements that year.
I'm not arguing whether it was good or bad for them to part - I've already stated many times here that I thought letting him go was a big mistake, even if he fell off a cliff at 42. It was more about the marketing and fan base, and, as it turned out, he was physically STILL more than worth the money he was wanting for three years.
Having said that, I have no idea if Brady wanted to stay, nor does anyone else. He certainly had a very good chance of building his legacy elsewhere, as he did by going to a super-talented team in need of a leader and a QB.
To summarize: I think Kraft and BB screwed up IF they could have kept him around. As it worked out, it was better for Brady to go, and better for the Patriots. I see no way they could have built a true contender in 20-22 while saddled with so many aging, less-effective vets and no money. Still, I would have liked to see Brady break the remaining records in Patriots' blue and white, and would have preferred that he retire playing ONLY for the Patriots.
The Patriots wouldn't be in nearly as good position right now, however, in my opinion. Less money and probably less talent, as they would have had to try to squeeze out a couple more years with vets to try to get Brady back to the SB.
In the end, it worked out for both parties, other than the fact that so many noisy, butthurt NE fans can't put it in the rear-view mirror and just enjoy the rebuild.