I dont think its hard to get agreement with a player before bidding on him, its probably common practice for Marotta M.O, not defenitive, just we want you and the player and his agent gives his ok to go ahead negotiating with club. This be clearer in a case like someone whos contract is expiring now, if you dont get him now you will be able to negotiate to get him on a free almost immediately after window closes, or now. Sorta pre-agreement is common (had it with Khedira and Llorente).
But yeah nothing will happen with these 3m bids, even if you should bid low on contract expiring player, and the player himself not being all that.