Lothar Matthäus comes with balanced stats, both in attack and defense, with 10k in almost all of his stats at level 60 and reaching 16k in all three defensive options at level 100.
His offensive stats are decent for a defender but fall short for a CM or CDM position.
His best position is undoubtedly CB, taking advantage of his good defensive stats and S+ blocking skill move.
As a midfielder, his passing stats may not be enough compared to other CMs in the game.