If it was shared in a routine matter-of-fact conversation, then why not simply say who the conversation was with?
A number of years ago, there was a later season game where Sarah Nurse left the ice in the third period, and didn't return. So people were a little worried. A few days later, I was at Sequoia Library - off-campus - picking up tax forms, and noticed Baylee Wellhausen and another player (Mauermann, maybe?) were also there, studying or whatever. An unlikely location, but there they were. So I went over, said hello, apologized for interrupting, and asked 'How's Nurse doing? Is she OK?' Wellhausen looked at me puzzled, said 'no, she's fine'.
Did I come here to "report confidentially that sources tell me Nurse is good to go next weekend"? No, of course not.
I posted 'Hey I ran into Wellhausen at Sequoia Library, and good news. She said Nurse is A-OK.'