Thinking someone may transfer at season's end has more to do with human nature than fans being cynical. We've lost someone through attrition almost every year since the '80s. If we start with the Billy Tubbs era in 1980, I would guess we've lost 40-45 players through transferring, getting booted or becoming academically ineligible in the previous 35 years. As a result, we're probably conditioned to believe someone will leave this year as well. Who do you look for? Well, someone who doesn't appear to be happy would be a reasonable start. I hope it all works out at OU for Manyang. Like others have pointed out, his lack of a "rah rah" attitude may very well just be his demeanor...no big deal...we'll find out for sure at season's end.
Manyang can't really transfer because he's already a junior. 30+ frontcourt minutes are opening up next year with Ryan leaving. I'd expect Manyang to fill some of those.
And I'm really not sure we lose anyone to a transfer. 113 of a possible 200 mpg are not returning next year. That's a lot of minutes available for the young guys on the bench. After next year when we see where the chips fall with Odomes, Buford, James, McGusty, Doolittle, Grandstaff and Strong we may see a guy or two leave, but next year is a great opportunity for everyone on the roster currently to earn some playing time. Jamuni is the only guy I could see leaving after this year.