The Hamlet Project

Now, why has Claudius sent Osric, of all people, to get this message to Hamlet? Did he look at his cadre of assistants and nobles, messengers and lords, servants and ministers and think, “Ah, yes, Osric. He is sure to annoy the hell out of Hamlet as he delivers this message. Maybe Hamlet will be so distracted by his water-fly behavior, he will not have time to get suspicious – thus increasing my likelihood of killing him. Or rather, having him killed.”
Is that why?
Or did Osric volunteer for the message?
I’m thinking the former. Claudius is a crafty bastard.