A lot of the players the club targets are playing international games, and the club won't do any deals until they know the player has not injured himself. A lot of signings will happen late June I predict.
We should expect Daniel James to sign very soon, he'd probably already be confirmed if not for the sad passing of his father.
Outside of that, many of the players we're targeting are very very hard to get, Sancho wants to play CL next season, Felix has a 120M euro buyout clause and is also targeted by City, koubaily won't be sold unless 150M Euro are put on the table pr. the Napoli president, De Ligt is undecided, but a longshot, James Maddison is rumoured, but at 60million but Leicester has no reason to sell. Wan-Bissaka is valued at fantasy money by Crystal Palace who also have no reason to sell and so the list goes on.
The transfer market is incredibly hard when you cant offer Champions League, and your two biggest stars are causing internal issues (DDG not signing a contract, Pogba openly flirting with other clubs) on top of targeting players in clubs that has no financial motivation to sell their players unless fantasy money come on the table.
Some of you are being outright incredibly unfair when you criticise the club for lacking ambition. Blame the players that landed us outside of top4 and made the job that much harder, not the club that now has to go out in the world and spend top dollar to simply outbid the likes of Liverpool and Manchester City for players (Bruno Fernandes for example) since we cant offer the same international competition.
Fact of the matter is that we: A) Don't actually know whats going on. Handshake deals can have already been made for several players or discussions are well unnderway and about to be finalized pending the nationals. B) Players are on holiday and might want to spend some days making a relatively big decision about their future. C) It's never been as simple as "Lets just buy this guy" D) There are barely any players being signed at the moment anyway, what's your hurry?