Everton have won just once in their last six and have slipped to eighth in the Premier League.
Richarlison is their top scorer with eight goals after his £40m move from Watford.
And the Brazil international has been forced to play through the middle due to Tosun's form.
Gylfi Sigurdsson is the second top scorer with seven while Tosun has just two and Theo Walcott three.
Marco Silva's Everton are in need of a prolific striker (Image: GETTY)
Jean-Kevin Augustin joined RB Leipzig from Paris Saint-Germain in 2017 (Image: GETTY)
Tosun is likely to be sold in January if a buyer can be found and they will go all out for Augustin.
The former PSG ace has eight goals in 23 games for Leipzig this term.
But Everton will look to negotiate the price and could even use Ademola Lookman as part of the deal.
Everton lost 3-1 to Manchester City yesterday and Silva complained of their lack of fire power in front of goal.
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