Not sure if it is an either/or. There is an increasing development of players running down their contracts, and I wouldn't be surprised if at least one of Mac, Tross or Maupay do so.
There were 'hints' that Biss would sign a new one from the comms team a month or so ago, and I thought Blue Valkyrie was spot on in saying that they'd co-ordinate the announcement with the White sale, but nothing on this as yet.