The Chilean is now into the final six months of his contract, and is being targeted for a move this month by both Manchester United and Man City.
"It looks like Sanchez will not extend his contract, but we want to keep Jack and if we have an opportunity maybe to keep Ozil, the rebuild will be less deep than if all three left".
When asked about Sanchez on Friday, meanwhile, Guardiola refused to discuss the prospects of signing the forward.
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Averaging 2.80 completed take-ons per 90 minutes, Sane has more success beating players than Sanchez - who averages 2.40 at Arsenal this season.
But Carvalhal insists buying rather than selling is on the agenda of the Premier League's bottom club this month, with the Portuguese saying that chairman Huw Jenkins has given him assurances that Mawson will not be leaving the club.
Sanchez now has to decide whether to join City this month, wait until the end of the season and move as a free agent, or take the huge windfall on offer and join United now.
But Arsenal's failure to sign Monaco's Thomas Lemar as a replacement saw the London club pull the plug on the deal, forcing Sanchez to remain at the Emirates.
"And I can also understand why, supposedly, Man City would put two fingers up at Arsenal for not selling him back in the summer when they wanted and now playing hard ball. All I can say is that Sanchez is a phenomenal player".
"I said hello", replied Conte with a smile.
"If you anticipate the transfer market you become stronger and you make the other team weak. And you will have more and more players going to the end of their contract because of that". After all, they were determined not to pay over the odds for Kyle Walker last summer but, when it came to the crunch, they stumped up to sign the defender from Tottenham.
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Bournemouth are a side who will take you on, but if you get the first goal against them they will open up and give you chances. "You conclude that", he said.
"There's a massive importance for these kinds of games, of course", said the Frenchman.