Oscar is Spanish, so not really. The point was more that he isn't communicating directly with the players in detail about tactics, positioning, strengths, weaknesses etc.
I could see this being a hindrance as the season goes on... but no one else seems to so maybe I'm just scraping the barrel.
All I will say is I could see why we chose Oscar over other managers, it seemed consistent with the decision making process at the time. Appointing Hyypia seems slightly inconsistent. A slightly lazier choice maybe... Not that it won't work, just think the club will have to adapt to him a lot more than it did with Oscar who slotted in quite easily.
We've got 3 Spanish speaking players now after losing Leo, Orlandi, Lopez and Rodriguez. Of those 3 one appears fluent with one not as much and one not at all. Also Nathan Jones speaks fluent Spanish so I don't see how Corlunga won't get the specific info you mention
I can't see Sami getting the job if this was a problem?