From what I heard about Matthews (recent Ivins/Cooper pod), he was on the same 7x7 team as Nico and Ethan Davis. It was some tourney and they all played on the same team and supposedly meshed really well.
As for Wingo, I've read online from Georgia fans that UGA is not in the running for two reasons - something happened in his visit to UGA that really rubbed either the staff or other players the wrong way and second, UGA's class is quickly filling up and there is very little room for him....supposedly.
I think Texas is probably the biggest threat here. JMO.