On his return to face Chelsea, Kai Havertz briefly thought he had put Arsenal 1-0 up in west London, choosing to send a clear message to the home fans when celebrating. Unfortunately, Havertz was then swiftly made aware that his Arsenal strike was marginally offside, even if it was an excellent piece of quick-thinking by the away side. Havertz then had to retract his celebration hushing the Chelsea fans, who he’s already come back to haunt in the past. Of course, the German then didn’t have another opportunity to score before the full-time whistle. Although, there was one crucial nearly moment…