On the other side, Tom Cleverley is a doubt after limping off in Watford's goalless draw with Stoke City. Piers Morgan, the one-time conqueror of Gene Simmons and Stephen Baldwin in "The Celebrity Apprentice", has long since appointed himself as spokesman for the most disgruntled faction of Arsenal's fan base. Harry Kane denied them the victory with a penalty in the 95th minute. The fact remains the coach wanted to recruit another centre forward.
David Luiz returns to the start a league game for the first time since October, although Andreas Christiansen (hamstring), Ross Barkley (hamstring) and Alvaro Morata (back) are missing through injury. They are now five points clear of Liverpool, six clear of Chelsea, seven from Spurs and 11 from Arsenal.
Giroud scored 105 goals for Arsenal, and could make his debut for Chelsea this evening, as Antonio Conte's men travel to face Watford in the Premier League.
Then Chelsea came knocking, and two things happened that made him change his mind and transfer to Stamford Bridge.
"But his whole persona was different to Jose at United when he was talking about the players he has signed".
Having turned down the chance to go to Everton again, and with loans to Dortmund and Sevilla not exactly up his street, his desire to stay in London was key. He didn't encourage me to join Chelsea. Michy Batshauyi has joined BVB on loan until the end of the season.
Being second-best won't be a consolation to him because he knows as well as any that second is nothing.
Arsene Wenger has hailed Olivier Giroud's commitment to Arsenal after he completed his transfer to Chelsea FC last week. Only time will tell if he can repeat that success in Manchester.