Arsenal manager, Mikel Arteta, has hailed Kai Havertz following his display in the 2-0 win over Paris Saint-Germain on Tuesday. The Gunners claimed their first win this season with a mature performance against the Ligue 1 champions. Havertz and Bukayo Saka’s goals in the first half was enough for Arsenal to seal the win. For Havertz, it is his fifth goal of this campaign. Arteta said: “He has been unbelievable. His football brain, the way he understands space, his timing, he brings people together. “His work ethic is incredible and now he is a real threat around the box. “He is one of our main…