Image copyright Getty Images Image caption Cenk Tosun has scored eight goals in 24 games for Turkey

Everton hope to discover in the next 24 hours if they have been successful in securing a £25m deal for Besiktas striker Cenk Tosun.

Manager Sam Allardyce confirmed Everton had made an offer for the 26-year-old.

Negotiations are continuing, with Besiktas believed to be holding out for a slightly higher fee.

Allardyce said after Everton lost 2-0 to Manchester United at Goodison Park: "We have done all we can. I presume we will know more in the next 24 hours."

Tosun has helped Besiktas reach the last 16 of the Champions League, where they meet Bayern Munich.

"We need a bigger goalscoring threat than we have got and that may help us achieve more results," said Allardyce, whose side did not have a shot on target against United.

"I can't guarantee whoever comes in is going to score goals right away."

And he added on Tosun: "Our deal is in. It is up to them whether they accept our deal."