However, since Henry's departure, the Gunners have never really adequately replaced the Frenchman. Olivier Giroud and the injury-prone Robin van Persie have done a job certainly, but no one has really excited the fans over a sustained period of time like Henry did.
Witness the fervour on the terraces when he scored in his comeback game against Leeds United whilst on loan from the New York Red Bulls. The Emirates and Highbury before it were never really noted as hotbeds of atmosphere, but Henry injected that excitement.
According to The Sun (h/t 101 Great Goals) on Friday, a new striking hero may be making his way to north London in the near future.
Atletico Madrid's Diego Costa is the form striker—not just in Spain, but in Europe—at the moment, having been the first to reach the 20-goal mark this season.
His form has continued over a sustained period; Costa was second only to Radamel Falcao in the goalscoring charts at Atleti last season, and his opening goal in the 2013 Copa Del Rey final set the mattress makers on their way to burying a hoodoo against arch rivals Real Madrid.
His goals, and link-up play with David Villa et al, are the chief reason why Diego Simeone's side find themselves still enjoying the dizzying heights of the pinnacle of La Liga, second only to Barcelona on goal difference, with a mouth-watering match between the two in just eight days' time.
For those unfamiliar with Costa, here is a player in the mould of the best "traditional English centre-forward". To therefore not only survive, but to excel in the more technical La Liga, tells you much about the player's skill-set.
Brazil will be kicking themselves that he has decided to align himself to La Roja rather than the Canarinho.
So, how will he fit in at the Emirates? Simply put, Costa has it all.
Raw power, strength, unbelievable energy, doggedness and, as he has shown over the last months, confident and adept in front of goal. A player who links well with the midfield and fellow strikers, and quick feet for a big man too.
It really is difficult to pick holes in his all-round game at present.
Arsene Wenger is known to be the master of the shrewd purchase and doesn't throw the Arsenal pound around with sheer abandon. Talksport journalist Lee Roden notes Costa's quality:
Costa isn't cheap at £32 million, but as the deadline-day purchase of Mesut Ozil showed, if you want proven class then you pay the premium.
The Gunners have enjoyed a fabulous first half of 2013-14, and the purchase of Costa would have the same effect as the Ozil signing as we move into the second half, and business end, of the season.
Goals win games and Costa will deliver. He could be the difference in bringing the title back to north London or not.
Yes, he is that good.