The transfer window will then close — though there is nothing to stop work on deals continuing in the background — before it reopens on June 16 and runs until September 1.
The reason for this is the new Club World Cup.
In order for players to be registered in time to play in that competition, they need to be signed earlier in the summer, hence the small window before the tournament kicks off.
Liverpool got around $13.5 million (£10 million) through a transfer fee and the salary saved in return.
Jarell Quansah is another for whom an exit cannot be definitively ruled out.
"I think we can find one or two extra weapons this team doesn’t have," Slot said a couple of weeks ago when he was asked about what he was looking for this summer.
"Maybe, maybe, by using the transfer market.
But apart from the transfer window, we can also improve certain aspects ourselves."
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