I like Tete and Kongolo. You can be a good tackler AND a smart player at the same time. Look at van Bommel for example. He was a thug but he was also a very smart player (and a leader)! Also please don't bring Martins-Indi back. That guy is a disaster waiting to happen. If he learns how to think the game at a decent level then maybe because he has a nice package of skills/physical ability but otherwise keep him as far away as possible.