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Only last month Barca's sporting director Deco publicly named Diaz, and Manchester United’s Marcus Rashford, when talking about their transfer plans.
However, it is understood when the Catalan club made an approach to Liverpool on Wednesday they were told they had no intention of selling.
However, with Darwin Nunez expected to depart this summer and the future of Federico Chiesa in doubt after a frustrating debut season in which he made just 14 appearances, Arne Slot’s Premier League-winning forward line already looks like losing two of its members.
The arrival of Florian Wirtz, with discussions ongoing with Bayer Leverkusen over the transfer fee after a recent £109m (€128m) bid was rejected, will likely offset the impact of that – especially as Nunez and Chiesa contributed just nine goals between them.
Last month Diaz told American-Spanish television channel Telemundo: "For me, I’d stay however many years it takes."
The Cherries value the 21-year-old Hungary international, who is keen on a move to Anfield, at £45m but Liverpool’s sporting director Richard Hughes is currently negotiating with his former club over the fee.
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