Arsene Wenger says Alexis Sanchez will respect his decision to keep him at Arsenal.
Sanchez, who has been linked with a move away from the club this summer, took part in an open training session at the Emirates Stadium on Thursday ahead of Sunday's Community Shield meeting with Chelsea.
The 28-year-old, who is an odds-on with Sky Bet to stay with the Gunners, has only just returned to training having been handed an extended break following his involvement in the Confederations Cup with Chile.
Speculation over his future continues with Manchester City 3/1 favourites to land the striker with his current contract expiring next summer.
But Wenger said: "I will not give anything away on (Sanchez) but the only thing I can tell you is that he is focused, and my decision is clear: he will stay and he will respect that. It is as simple as that.
"Every negotiation has to be a little bit secret. The transparency of society is very pushy but we have to resist a little bit, as much as we can.
"We know as well we have a duty to inform people, but to talk about some things is not information any more - it is suicide.
"I think he will be here this season, and if we can do it for more seasons we will do it as well.
"The frame of mind of a football player is quite easy. Once you go out and play, you focus on the game and you enjoy it.
"This is a thing that passes quickly, so enjoy every single moment - and he loves the game so much, and what he does."
Sanchez is not the only player whose deal expires at the end of the campaign, with the likes of Mesut Ozil, Alex Oxlade-Chamberlain, Jack Wilshere and Kieran Gibbs also entering the final year of their respective contracts.
Wenger said there was "nothing to announce" on any new deals but did reveal he expects forward Lucas Perez to leave.
The 29-year-old has been frustrated at a lack of first-team opportunities since arriving from Deportivo La Coruna last August.
When asked if he saw Perez's future elsewhere, Wenger replied: "Yes, because we have a congestion of strikers.
"I don't like to lose him because, for me, he's a top-quality striker but we have many strikers. At some stage, too much competition is not competition any more.
"You cannot give the chance to everybody, so if he finds a satisfying solution at least for a short time, he will do it."
Perez is not expected to be involved at Wembley on Sunday as Arsenal look to replicate their FA Cup success over Chelsea by beating the Blues in the Community Shield.
Sanchez may also sit out having only just made a return, with Shkodran Mustafi in a similar position having also played at the Confederations Cup with winners Germany.
Francis Coquelin will not play after suffering an ankle injury in the Emirates Cup win over Benfica, with Wilshere missing out after just returning to full training.
Gabriel and Santi Cazorla are long-term absentees but there are likely to be places in the team for summer recruits Sead Kolasinac and Lacazette.
