Where that certainty that Poch would accept ManU comes from? It's not like they will pick him up from the shelf and go.
If anyone needs a transfer rumor for clicks, Untied is way to go, but most of them are ridiculous. Pochettino wanted trophies and top-flight football, whereas United is no change from Tottenham for him – this club is managed in criminal way on ownership and business level and no manager will change that. Sacking Ole may be an improvement, but it's still not an environment for success. If Poch wanted just any job, he'd be back on the sideline 9000 times already.