Looks like there's another transfer poker game going on here.
Sport Witness highlight that Jamie Jackson reported this, who could have obtained this info from Arthur Quezada of Esporte Interativo (or vice versa). Regardless, Record are stating that Porto are just looking for 20 million Euros and that United are briefing a higher price for whatever reason.
Given that both clubs are negotiating through intermediaries, could it be that certain intermediaries are looking to take advantage of this transfer? I wonder how the negotiations would have gone if both clubs negotiated directly.