I think "significant" in this context means he didn't go for free.

We want volunteers, not hostages.

I've looked about and can't find any stories saying 3-4 million, most the ones ive just found tend to say undisclosed but believed to be around 1m  

they must give a toss given as they are often the clubs winning it would devalue the cups even more removing the champions league clubs from them, which would mean everyone gets much less money, as its going to be harder to sell the tv rights and sell more sponsorship for more money every year when you basically downgrade the competition and remove the best teams from it, epically internationally they are paying for them teams as they draw far more interest in them teams than they do  we are not the only team that's had some crazy injury issues this season, so anything to help relieve that pressure has to help us, and think not having to replay teams will benefit us more, i'm all for no replays as i'd rather take a prem team to penalties than a replay where they have the players to fix where they went wrong the first time (as we saw vs chelsea in the semis this year lol). going to be fun to see more smaller teams down the pyramid getting some giant killings, love out like that me seeing a prem team get taken out by a non league or league 2 team and you know its something their fans will remember for ages, epically if they put a lil run together.  

Dom Shaw on the podcast mentioned 3-4 million.   My understanding from piecing together various stories was 3-4 million dollars and then Rotherham had a sell on clause and we ended up with just over £2million.   But, thats based on stories and assumptions.