Sanchez last season scored more than Sané, Sterling, B. Silva and Jesus combined, granted Jesus came in Jamuary and was injured. But that is what we need to prepare for, injuries. Now Sanchez is not necessarily the one to buy, but it would be great to have a 3rd striker who can stand shoulder to shoulder with Aguero and Jesus.
We have enough games and rotation and subs with 4 competitions. If we have 3 true no. 10s who can play as a no.9 we will be in enough games to fight on all fronts. Last season we were out of the cups and didn't reach the later CL stages early because aside from problems at the back we just didn't have enough firepower to go around as we used to and were bereft of ideas, had an isolated aguero first half of the season, or threw in Iheanacho who only works as a finisher not part of play.
We won the titles because we had more firepower, how many games with 3 scores and above did we get? We trounced Spurs 11 goals in two games, the 6-1, Dzeko's 4 goals against Newcastle. Now we can barely pull a draw at home because we are too busy fixing the leaky back. 0-0s and 1-1s that's not us now, it was us then in Mancini's first season.
Sanchez has dragged arsenal many times this season but they have far too many average players to keep momentum. Sanchez to arsenal is like Hazard to chelsea, Suarez to the liverpool, Tevez to us. Players who just split the defence open like knife through butter.
We don't have to buy Sanchez, but it would be great to have a Sanchez like player to be part of the team.