Giroud and Laca are the ideal strike force. Both have contrasting styles of play, both are experienced players at their peak, both have a consistent league goalscoring record, both have got something to prove. There's a excellent competition there which should motivate each player ahead of the season and with WC2018 in mind.
I said numerous times I don't believe in the concept of a starting striker. A fair rotation policy based on competition, form and opposition should be in place. A smart manager utilities their respective qualities to the benefit of the 11 over a 38 game season.
The simply truth is if we lose Giroud we become a weaker squad. We know Giroud plays better when he's back is to the wall and he has pressure from others. He's an asset whose worth lot more than £20M to Arsenal.
Also I honestly don't know how Welbeck has accumulated so much good credit he's seen as competent back up or credible competition for Laca.