The fact I nearly never faced him is rediciculous.
He's fast, has a good tackling (as good as it can be with the servers) and he has good positioning.
If you are not spending big on your CBs i think posch is one of the best options. The best word to describe him is solid.
Before I played Gomez IF and i think Posch is the better/cheaper option. Most of the suqads i faced, there are Saliba and Gomez IF, Kimpembe, etc... and i think most of theme can save there coins with Posch and use them to trade or for a Striker, because i think attackers are more game-changers this year as Defenders as for now. Léao, Bennacer, Dzeko and many other Serie A Players are also cheap beasts and you can link him with them. I also played him some time on 2 chem and there where no difference.
In th WL im playing for 11/9 and this card doesn't make any Problems, I can't remember one error leading to a goal (with good servers).
So i you have completted him, give him a try!
-Low Budget
-Most get him for free with untrades
-Solid
-Fits easily in Serie A Hybrids (with Hasenhuettl as manager)
-You can use him later for a SBC
-Maybe a good super-sub, if you switch to 3 defenders later in the game
-Not as good as the icons, VVD, etc.. Maybe your playing for more than eleven wins, then this card is maybe not good enough
-Unfamous - not so fun for some
-Passing