If there were no other clubs willing to pay what we are for Rice and he was available next season then yes, I think he would join us even if we were only in Europa, because there would be a big amount of money and more potential for improvement here than at West Ham, as far as I'm concerned. de Jong? If he's not coming this season he's probably not coming next season, totally agree on that.
The real question is do I see Tielemans or Neves as the way we'll crack into the top four. Will they make the difference in our position? Personally, I'm not as convinced as you seem to be, especially because ETH seems to be unconvinced as well. I'd prefer we went after the next big youth prospect and grow into top four rather than relying on existing talent on massive wages, as it clearly very rarely works out for us.
Sidenote, every summer window there's a number of people thinking we'll make 7+ signings, it's kind of funny tbh.
First team signings (youth prospects and backup keepers in brackets):
22/23 - 3 so far - Malacia, Martinez, Eriksen
21/22 - 3 - Sancho, Varane, Ronaldo (Heaton)
20/21 - 3 - VDB, Telles, Cavani (Amad, Pellistri)
19/20 - 4 - Maguire, bruno, Wan-Bissaka, James (Ighalo on a loan to cover injuries)
18/19 - 2 - Fred, Dalot (Grant)
17/18 - 4 - Lukaku, Matic, Lindelof, Sanchez
16/17 - 4 - Pogba, Mkhitaryan, Bailly, Ibra
15/16 - 6 - Martial, Schneiderlin, Depay, Darmian, Romero, Schweinsteiger
14/15 - 5 - Di Maria, Shaw, Herrera, Rojo, Blind, Falcao (Milinkovic-Savic)
13/14 - 2 - Mata, Fellaini
12/13 - 5 - RVP, Kagawa, Zaha, Powell, Buttner (Henriquez) - debatable on Powell and Buttner being 1st team signings though.
11/12 - 3 - de Gea, Jones, Young (Veseli)
10/11 - 3 - Bebé, Smalling, Chicharito (Lindegaard)
09/10 - 4 - Valencia, Diouf, Obertan, Owen
08/09 - 2 - Berbatov, Tosic (De Laet)
Supposedly we're in for four more signings, as I mentioned earlier. That'd make it our biggest transfer window ever, easily. I'm not sure where people think these funds are coming from. I think we'll get 2 more, maybe 3, meaning 5-6 signings - which is still more than any time in the past six seasons (and those seasons include multiple windows).