I never suggested he will definitively spend his entire career at Atletico, just that it would seem improbable for him to leave so soon after just returning. If he hadn't 'forgotten' as you say, why on earth would he go back so quickly? Busquets, Iniesta, Xavi & Messi never left their youth clubs, they lack ambition as well? Had Villarreal known what they had on their hands that buyout would've been much higher.
If Rodri were surplus to needs for Atletico or they were in desperation to generate cash then always possible but that is unlikely the case at this time. It would take something extraordinary, or someone like Pep, to have a player like him to have his head turned, I am skeptical but of course it indeed could happen