apollo creed wrote:"My message to him is this: 'You can keep going on about how you want all the belts, but it's put up or shut up now. You either want to fight me in June or not. You've been mentioning my name, and I'll happily, happily oblige you with a fight. Let's stop wasting time and let's go,'" Saunders told Isaac Robinson.
He continued to turn up the heat on Monday, by returning to social media outlets and sporting a t-shirt which taunted his middleweight counterpart. Saunders stated that a random person gave him the shirt, which read "GGG is a p*ssy Borat, unification with Saunders."
Saunders is so eager to cash out.

I think you need to watch Billy Joe Saunders being interviewed by Kugan Cassius from the iFL TV channel. You'll find that he's actually very respectful about GGG, but he has said a couple of light-hearted tongue-in-cheek remarks about Golovkin, which he openly admitted was simply promotional banter.
Perhaps you’re right, maybe he is looking for a huge payday before he retires, but I would advise you to watch any interviews with Saunders as opposed to reading his interview transcripts, since the British sense of humour (wit, irony and sarcasm) can easily be misinterpreted if you don’t see the facial expressions of the person that said those words.
Any nonsense we hear from Saunders up until the night of his bout against GGG, will simply be WWE-style promotional hyperbole.