Arsenal have had an offer for Douglas Costa rejected, according to the player's agent.
The former Brazilian U20 midfielder has been linked with a move to the Barclays Premier League in the past, although an offer for the player from the Gunners was not thought to be on the cards.
Willian, who also plays for Shakhtar Donetsk, has more recently been linked with a move to the Emirates, but Arsenal sights now appear to be set on Costa.
"The Gunners have offered the club Denilson in exchange for Douglas but Shakhtar said no. They are not interested in Denilson and would want only money," Cesar Bottega told Calciomercato.com.
An impressive campaign for the Ukranian side has led to increase rising in Costa, and his performances in helping Shakhtar to the Champions League also draw praise from the media.
Arsene Wenger confirmed in May that he's looking to bring the 'right' players to Arsenal this summer, and a central midfielder is thought to be a position the Frenchman is looking to strengthen in.
With Denilson set to make an exit, and Cesc Fabregas and Samir Nasri's future at Arsenal far from certain at the current time, reinforcements could well be needed during the transfer window and the 23-year-old could be one of the best options available to Wenger.
The Gunners have also seen Costa's ability first hand, with the player impressing in both legs when Shakhtar met Arsenal in the group stages of Europe's elite competition this season.