I've shown my working out.
First of all, it's logical to assume 3/4 means 4 - Leonard, Holmes, and 2 CBs - we've admitted interest in EEL, and we wouldn't make him our sole CB signing. That would be stupid.
Then if Long leaves that's 5 because we'd replace him.
The 6th is questionable, but again logical. He already referenced Holmes and I think he'll be talking about a different attacking player. It's also widely agreed that we could do with more up front. Wilder will see that too. And his budget may yet receive a boost with the Walker sell on.
Lastly, I'm sure they've understated the number of signings we're after previously. We ended up with more players last summer than Wilder indicated he wanted, and not only as a result of our poor start.