Former Arsenal striker, Alan Smith, has said the 3-0 win over Brighton saw Kai Havertz’s best game for the club. Havertz grabbed his ninth Premier League goal at the Amex and provided a late assist for Leandro Trossard, as the Gunners returned to the top of the Premier League. It was also the 24-year-old’s fourth goal since Mikel Arteta moved him up top in February. The German created four chances against Brighton – the most of any player on the pitch. “Havertz had his best game in an Arsenal shirt,” Smith said on Sky Sports. “He looks so at home in that role he has been asked to play. “Havert…