I don't really get this argument. Lemina and Hoedt look decent enough to me, as do Romeu, Boufal, Austin and Cedric.
I'd like us to sign 1 or 2 older players though, to give us a bit more continuity and break the cycle of the team being broken up every Summer. If we signed Walcott for example, we'd have a player who'll want to do well for us, without an eye on moving on.