Arsenal manager, Mikel Arteta, has said fans are yet to see the best of Kai Havertz. Havertz joined the Gunners from their London rivals Chelsea last summer in a 65m deal. The Germany international endured a poor start to life in the Emirates but currently has 11 goals in 34 matches. Arteta, speaking ahead of their trip to Brighton on Saturday, insists Havertz is just settling in and more is yet to come. “We haven’t seen the best of Kai Havertz yet. At his age, he’s just started with us, it’s his first season, and he’s building those relationships… “He’s got more to come, more games to come, h…