That might be a bit of a trap for Pereira. Everyone assumes he's superior to Jiri in a stand up, but if most of his training camp is focused on takedown defence and improving his ground game, he might neglect the striking part and could get out-striked by Jiri. And it's not like Prochazka is lacking in the striking department, if Pereira in the top form is better than him, it's only by a small margin.
But yeah, anything is possible in this fight. Who knows, maybe Alex will be the one looking for a takedown, as he did in the first fight against Adesanya.