"The fans have been very patient this year - well, the last few years - of not bringing trophies back to the club," says Walcott. "We need to reflect on that, learn from our mistakes from last year and bring something back for them because they are just as important as the players.
"The Champions' League is the big one for us. We got so far but not quite. We need to be a bit more cutting in the last third and be a bit more dirty. Instead of playing brilliant football, sometimes just get a result, grind one out. We'll be doing that this year."
Walcott, plagued by a shoulder injury last season, has fully recovered and says the squad are determined not to let manager Arsène Wenger down.
"That's a big thing. He takes all the stick when we don't play so well. The boss reflects on the whole team and brings it back to himself. We've definitely realised that and how lucky we are to have such a great manager."