Omier is very good. Very different player from Sanogo in how he plays. He is a fantastic rebounder who gets most of his points on dump-offs and offensive rebounds. He moves most of the players he plays against, much like Sanogo. He is also probably a better leaper than Sanogo, not nearly the post up game, or footwork. He is probably slightly better than Sanogo driving to the hoop, but a worse shooter.
He is almost all effort.
Only Duke and UNC held him under double digits. On the plus side UConn has the height and strength similar to those two teams.
I don't think Karaban can keep him off the boards, but Sanogo should be able to body him. It's one of the best things Sanogo does. He bodies his man, sometimes to the detriment of actually getting the rebound (though he has been better at that).