Ronaldo joined Real Madrid in a £80million deal from United, but Cech believes the Portugal international could miss United more than they will miss him.
“Ronaldo had three exceptional years [with United], especially the last two, but I think Man United is a club that never relies on one person,” the Czech Republic international told Sky Sports News.
“Of course he scored a lot of important goals, but I think that he gained as well from the way the whole team played. So maybe he will miss them more than they will miss him. Who knows?
“Maybe they will miss him terribly, maybe not. In football you never know, and I don’t think they’ll be much weaker because they have the money and they have the possibilities now to replace him, and to get to the new season as strong as before.”