By Sean Walsh Arsenal forward Kai Havertz has claimed he and his teammates are only focusing on themselves in the Premier League title race. The Gunners moved to the top of the table with a 2-1 win at home to Brentford on Saturday evening. Declan Rice broke the deadlock before a mistake from Aaron Ramsdale allowed the Bees to go level through Yoane Wissa against the run of play. Mikel Arteta’s side spent much of the second half battering down the Brentford door and they got their reward late on when Havertz popped up with the winning goal, heading home a cross from Ben White. The result moves …