I'd go with Defence 81. IMO LÃ©o is better at pure defence positioning, although RÃ©ver is better all around.
Balance can be even 1 or 2 points higher. He is rarelly beated in the body to body.
Both TS and Acceleration should be higher. He is a fast center back. Low 80s IMO.
Response should be higher too. He is very good at antecipating the attackers, and also sharp in the attack. 83 is good for me.
Mentality and TW should be higher. This guy is a leader, and he never gives up. He is the second captain of the team, just behind Tcheco. I'd put both in the low to mid 80s.
He is also both footed. He uses his left foot very often and is very confortable with this. I'd go with 6-7 for both (7 probably).
RÃ©ver is know to have a good technique for a CB. He do a lot of sprints to the attack much like LÃºcio of Bayern Munchen. He reminds me to LÃºcio a lot of time. Their styles are very similar. I'd put all his dribbling, passing, technique and agression stats in the same patamar of LÃºcio or a bit lower.