Meulensteen is not just calling for change for the sake of it. He is pointing to a profile.
That matters at a club like United, where the goalkeeper is rarely just a shot-stopper. The role demands composure, command and the personality to survive long spells under scrutiny. Meulensteen even underlined Simon’s standing in Spain, saying: "O fato de ele ser escolhido antes de David Raya deve dizer tudo o que você precisa saber."
This is where the debate sharpens. Lammens reportedly ended last season in strong form and played a big part in helping United back into the Champions League. But Meulensteen is clearly not convinced that should end the discussion.
"Tem havido um debate sobre se Lammens deve ser o número um daqui para frente, e eu, pessoalmente, procuraria outro goleiro," Meulensteen said.
That does not mean Lammens cannot become a top goalkeeper. It means Meulensteen believes there is still a gap between promise and the standard set by names such as Peter Schmeichel, Edwin van der Sar and David de Gea.
The next step is whether this remains talk or turns into a genuine market move. For now, the more interesting storyline is internal: will United back Lammens, or will the search for a new No. 1 gather pace before the next transfer window closes?