Ozil and Sanchez lead the list of Arsenal's 15 most important players
With less than two weeks to go until the start of the Premier League season, clubs are finalising their squads for the new campaign.
But who are the biggest teams' most important men? Mattias Karen ranks Arsenal's top 15 players.
1. Mesut Ozil
Arsenal's attacking heartbeat must replicate last season's form for the Gunners to have a chance of winning the Premier League title and must hope his teammates make more use of the chances he creates.
2. Alexis Sanchez
Yes, Arsenal need a new striker, but a 25-goal season from Sanchez would solve a lot of their problems.
3. Petr Cech
With Arsenal facing a shortage of centre-backs at the start of the campaign, Cech becomes an even more crucial part of the defence.
4. Laurent Koscielny
The Frenchman was already the bedrock of the back four and his importance will only grow because of Per Mertesacker's long-term injury.
5. Olivier Giroud
His importance could change if another striker is brought in but Giroud must offer a more consistent scoring threat up front for the Gunners to achieve anything.
6. Granit Xhaka
The newcomer will likely be charged with keeping the midfield together and could provide the defensive toughness Arsenal have often been lacking.
7. Hector Bellerin
The young Spaniard was arguably the best right-back in the league last season and is still improving. He offers an added attacking threat down the wing with his blazing speed.
8. Santi Cazorla
Arsenal have many options in midfield but Cazorla's importance was highlighted by their struggles when he was injured last season.
9. Aaron Ramsey
It's still unclear how Arsenal can get the best out of Ramsey but he reminded everyone at Euro 2016 that he is a top player.
10. Nacho Monreal
The left-back was perhaps Arsenal's most consistent player last season and helps stabilise the entire defence. But the Gunners have a good replacement in Kieran Gibbs if the Spaniard gets injured.
11. Alex Oxlade-Chamberlain
"The Ox" is still waiting for a breakout campaign but has looked very promising in preseason following a lengthy injury layoff. The question is: Where he can fit into the line-up?
12. Alex Iwobi
If Arsenal don't sign another forward, Iwobi could well find himself a regular starter on the wing. But it's difficult to guess what to expect from the 20-year-old, who offered flashes of brilliance last season.
13. Jack Wilshere
Arsenal have learned not to rely too much on Wilshere because of his injury problems. Having him fully fit would be a big bonus but the England international may still not be a regular starter.
14. Theo Walcott
After a frustrating season, Walcott faces another tough battle for playing time either up front or on the wing, especially if Arsenal bring in another striker.
15. Gabriel Paulista
Another player, who could become crucial if there are more injuries, but the Gunners' search for a new central defender indicates Gabriel could find be mainly a backup.
Mattias is ESPN FC's Arsenal correspondent. Follow him on Twitter: @MattiasKaren.